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Walshaw TW, Morris TM, Fouweather M, Baldock TE, Wei N, Eardley WGP. ORTHOPOD: Linking ambulatory future trauma injury distribution from fragility proximal femur fracture caseload. Injury 2024; 55:111527. [PMID: 38636415 DOI: 10.1016/j.injury.2024.111527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 01/15/2024] [Accepted: 04/01/2024] [Indexed: 04/20/2024]
Abstract
INTRODUCTION The age of those experiencing traumatic injury and requiring surgery increases. The majority of this increase seen in older patients having operations after accidents is in fragility proximal femur fractures (FPFF). This study designed a model to predict the distribution of fractures suitable for ambulatory trauma list provision based on the number of FPFF patients. METHODS The study utilized two datasets which both had data from 64 hospitals. One derived from the ORTHOPOD study dataset, and the other from National Hip Fracture Database. The model tested the predictability of 12 common fracture types based on FPFF data from the two datasets, using linear regression and K-fold cross-validation. RESULTS The predictive model showed some promise. Evaluation of the model with mean RMSE and Std RMSE demonstrated good predictive performance for some fracture types, although the r-squared values showed that large variation in these fracture types was not always captured by the model. The study highlighted the dominance of FPFFs, and the strong correlation between these and numbers of ankle and distal radius fractures at a given unit. DISCUSSION It is possible to model the numbers of ankle and distal radius fractures based off the number of patients admitted with hip fractures. This has great significance given the drive for increased day case utilisation and bed pressures across health services. While the model's current predictability was limited, with methodological improvements and additional data, a more robust predictive model could be developed to aid in the restructuring of trauma networks and improvement of patient care and surgical outcomes.
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Affiliation(s)
- T W Walshaw
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom.
| | - T M Morris
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom
| | - M Fouweather
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom
| | - T E Baldock
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom
| | - N Wei
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom
| | - W G P Eardley
- Orthopaedic Surgery Department, James Cook University Hospital, Marton Road, Middlesbrough, England, TS4 3BW United Kingdom
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Osmanski-Zenk K, Klinder A, Pingsmann A, Lohmann CH, Bail HJ, Kladny B, Mittelmeier W. Institutional Surgical Setting and Volume Effects of Certified Arthroplasty Centers in Germany: Evaluation of the Quality of Care in a 5-Year Comparison. Healthcare (Basel) 2024; 12:904. [PMID: 38727461 PMCID: PMC11083652 DOI: 10.3390/healthcare12090904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/15/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
To improve arthroplasty care quality, the EndoCert initiative focuses on structural, processual, and surgeon-related quality assurance. The aim of this study was to assess the impact of a surgeon's case load in certified centers on quality of care, distinguished by different types of surgeons. Data from the annual reports of EndoCert certified centers for the years 2017 to 2021 were analyzed. The study revealed reduced numbers of cases, while the number of surgeons remained constant. Since 2020, the decrease in the average case load per surgeons has become more pronounced. There were also differences between senior (sECrs) and EndoCert-registered surgeons (ECrs). Before the 2020 pandemic, over half of surgeons exceeded minimum annual case requirements, while, afterwards, this number declined, especially for the ECrs. Affiliated surgeons, who are also sECrs or ECrs, performed predominantly lower numbers of arthroplasties. However, a higher percentage of affiliated surgeons in a center correlated with faster surgeries and lower mortality rates. High numbers of arthroplasties per center or surgeon were not necessarily associated with better quality indicators, especially in the knee. While the comprehensive quality standards may offset volume effects, EndoCert should reconsider minimum volume regulations based on surgeon, but also on each joint.
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Affiliation(s)
- Katrin Osmanski-Zenk
- Orthopedic Clinic and Policlinic, University Rostock Medical Center, 18057 Rostock, Germany
| | - Annett Klinder
- Orthopedic Clinic and Policlinic, University Rostock Medical Center, 18057 Rostock, Germany
| | - Andreas Pingsmann
- Professional Association for Orthopaedics and Trauma Surgery, Biberburg Orthopaedic Associates, 14089 Berlin, Germany
| | - Christoph H Lohmann
- Department of Orthopaedic Surgery, Otto-von-Guericke-University, 39120 Magdeburg, Germany
| | - Hermann Josef Bail
- Department of Orthopedics and Traumatology, Paracelsus Medical University, 90471 Nuremberg, Germany
| | - Bernd Kladny
- Fachklinik Herzogenaurach, D-91074 Herzogenaurach, Germany
| | - Wolfram Mittelmeier
- Orthopedic Clinic and Policlinic, University Rostock Medical Center, 18057 Rostock, Germany
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Genel F, Harris IA, Pavlovic N, Lewin A, Mittal R, Huang AY, Penm J, Patanwala AE, Brady B, Adie S, Naylor JM. Does preoperative opioid use predict outcomes to 6 months following primary unilateral knee or hip arthroplasty for osteoarthritis? A data-linked retrospective study. ARTHROPLASTY 2024; 6:11. [PMID: 38438888 PMCID: PMC10913630 DOI: 10.1186/s42836-024-00234-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 01/03/2024] [Indexed: 03/06/2024] Open
Abstract
BACKGROUND Few Australian studies have examined the incidence of prescribed opioid use prior to primary total knee or total hip arthroplasty (TKA, THA) and whether it predicts post-surgery outcomes. A recent Australian study demonstrated that the prevalence of pre-arthroplasty opioid use was approximately 16%. In the United States, approximately 24% of people undergoing TKA or THA are chronic opioid users preoperatively. PURPOSE This study aimed to determine (i) the proportion of TKA and THA patients who use prescribed opioids regularly (daily) before surgery (i.e., opioid use reported between the time of waitlisting and any time up to 3 months before surgery), (ii) if opioid use before surgery predicts (a) complication/readmission rates to 6-months post-surgery, and (b) patient-reported outcomes to 6-months post-surgery. METHODS A retrospective cohort study of patients who underwent TKA or THA between January 2013 and June 2018 from two Australian public hospitals was undertaken utilizing linked individual patient-level data from two prospectively collected independent databases comprising approximately 3,500 and 9,500 people (database contained known opioid usage data within the 5-year time frame). Inclusion criteria included (i) primary diagnosis of osteoarthritis of the index joint, (ii) primary elective THA or TKA, and (iii) age ≥ 18 years. Exclusion criteria included (i) revision arthroplasty, (ii) non-elective arthroplasty, (iii) hip hemiarthroplasty, (iv) uni-compartmental knee arthroplasty, and (v) previous unilateral high tibial osteotomy. RESULTS Analysis was completed on 1,187 study participants (64% female, 69% TKA, mean (SD) age 67 [9.9]). 30% were using regular opioids preoperatively. Adjusted regression analyses controlling for multiple co-variates indicated no significant association between preoperative opioid use and complications/readmission rates or patient-reported outcomes to 6 months post-surgery. Model diagnostics produced poor discrimination for area under the curves and non-significant goodness of fit tests. Pre-arthroplasty opioid use was associated with lower health-related quality of life (EuroQol-Visual Analogue Scale) compared to non-opioid users undergoing primary THA (mean difference -5.04 [-9.87, -0.22], P = 0.04, Adjusted R2 = 0.06) CONCLUSION: In this study, 30% of patients were using prescribed opioids daily prior to primary TKA or THA. Pre-arthroplasty opioid use was not associated with postoperative adverse events or patient-reported pain, function, or global perceived improvement up to six months post-surgery.
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Affiliation(s)
- Furkan Genel
- Whitlam Orthopaedic Research Centre, Ingham Institute for Applied Medical Research, Sydney, NSW, 2170, Australia.
- St. George and Sutherland Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2217, Australia.
| | - Ian A Harris
- Whitlam Orthopaedic Research Centre, Ingham Institute for Applied Medical Research, Sydney, NSW, 2170, Australia
- Liverpool Hospital, South Western Sydney Local Health District, Sydney, NSW, 2170, Australia
- South Western Sydney Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2170, Australia
| | - Natalie Pavlovic
- South Western Sydney Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2170, Australia
- Fairfield Hospital, South Western Sydney Local Health District, Sydney, NSW, 2176, Australia
| | - Adriane Lewin
- Whitlam Orthopaedic Research Centre, Ingham Institute for Applied Medical Research, Sydney, NSW, 2170, Australia
- South Western Sydney Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2170, Australia
| | - Rajat Mittal
- South Western Sydney Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2170, Australia
| | - Andrew Y Huang
- Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Jonathan Penm
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2050, Australia
- Department of Pharmacy, Prince of Wales Hospital and Community Health Services, Randwick, NSW, 2031, Australia
| | - Asad E Patanwala
- School of Pharmacy, Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2050, Australia
- Department of Pharmacy, Royal Prince Alfred Hospital, Camperdown, NSW, 2050, Australia
| | - Bernadette Brady
- Faculty of Medicine and Health, The University of Sydney, Sydney, NSW, 2050, Australia
- School of Health Sciences, Western Sydney University, Sydney, NSW, 2751, Australia
| | - Sam Adie
- St. George and Sutherland Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2217, Australia
- St. George and Sutherland Centre for Clinical Orthopaedic Research, Kogarah, NSW, 2217, Australia
| | - Justine M Naylor
- Whitlam Orthopaedic Research Centre, Ingham Institute for Applied Medical Research, Sydney, NSW, 2170, Australia
- South Western Sydney Clinical School, Faculty of Medicine and Health, University of New South Wales, Sydney, NSW, 2170, Australia
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Narayanan AS, Densley SM, McCauley JC, Kulidjian AA, Bugbee WD, Wilde JM. 'On Table' Versus 'Off Table' Direct Anterior Approach Total Hip Arthroplasty: Is There a Difference? Arthroplast Today 2024; 25:101283. [PMID: 38313192 PMCID: PMC10834458 DOI: 10.1016/j.artd.2023.101283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 11/07/2023] [Indexed: 02/06/2024] Open
Abstract
Background The purpose of this study was to evaluate whether there were differences in patient-reported outcomes, operative times, satisfaction scores, and complications between patients undergoing total hip arthroplasty (THA) performed through a direct anterior approach on a specialized traction table or a regular operating room table. Methods Patients who underwent a direct anterior approach THA on a specialized table or a regular table with a minimum 1-year follow-up were included. Patient-reported outcome measures and THA satisfaction were recorded. Demographics, complications, and operative times (both in-room and surgical time) were evaluated. Three hundred twenty-two patients were included with 217 (67.4%) undergoing anterior THA on the specialized table and 105 (32.6%) on a regular table. Results Outcome measures were similar at 4 months and 1 year postoperatively. Average operative time was 87 minutes (range, 50-160) and 90 minutes (range, 35-197) for the specialized table and regular table groups (P = .314). Average total in room time was 123 minutes (range, 87-201) and 120 minutes (range, 62-255) for the specialized table and regular table groups (P = .564). Satisfaction rates between groups did not differ (P = .564). No differences were found in complication rates at 4 months (P = .814) or 1 year (P = .547). Conclusions This study shows that the direct anterior approach for THA can be safely and efficiently performed on either a specialized traction table or a regular table. Surgeons should continue to utilize the approach and set-up they are most comfortable with to achieve an optimal outcome for the patient.
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Affiliation(s)
| | - Sebastian M Densley
- Shiley Center for Orthopaedic Research and Education, Scripps Clinic, La Jolla, CA, USA
| | - Julie C McCauley
- Shiley Center for Orthopaedic Research and Education, Scripps Clinic, La Jolla, CA, USA
| | - Anna A Kulidjian
- Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA
| | - William D Bugbee
- Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA
| | - Jeffrey M Wilde
- Department of Orthopaedic Surgery, Scripps Clinic, La Jolla, CA, USA
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Formby PM, Rodkey DL. Most Military Arthroplasty Surgeons Have a Low Volume Practice in the Military Health System. Arthroplast Today 2024; 25:101295. [PMID: 38380159 PMCID: PMC10877328 DOI: 10.1016/j.artd.2023.101295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 10/20/2023] [Accepted: 11/05/2023] [Indexed: 02/22/2024] Open
Abstract
Background The purpose of this study is to investigate hospital and surgeon joint arthroplasty volume in the Military Health System (MHS). A secondary aim is to look at interruption in physician practice during the study period. Methods Review of all patients undergoing hip or knee arthroplasty in the MHS over >5-year period to examine hospital and surgeon volume for total joint arthroplasty (TJA). We stratified hospital and surgeon volume into low, medium, and high volumes. Results Fifty surgeons performed at least 50 hip and/or knee arthroplasties during this period. These surgeons accounted for 75% of TJA in the MHS. When stratified by cases per year, the median primary total hip arthroplasty (THA) per year was 31.4 and primary total knee arthroplasty (TKA) was 47.3 per year. Regarding the volume threshold for primary and revision TJA, all hospitals were classified as having low volumes for both THA and unicompartmental knee arthroplasty/TKA. There were 0 high volume, 7 (21.9%) medium volume, and 25 (78.1%) low volume THA surgeons; there was 1 high volume TKA surgeon, 17 (34.7%) medium volume, and 31 (63.3%) low volume TKA surgeons. The average duration of clinical activity for fellowship-trained surgeons over the study period was 4.0 years, and the average duration of clinical inactivity was 263.7 days (17.9% of practice period). Conclusions The highest-volume military arthroplasty surgeons have low volume when compared to their civilian colleagues. There are also long periods of clinical practice interruption. These findings stress the need to establish civilian-DOD or DOD-VA working relationships so that MHS patients experience the best possible care by high-volume surgeons in high-volume surgical centers.
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Affiliation(s)
- Peter M. Formby
- Department of Orthopaedic Surgery, Womack Army Medical Center, Fort Liberty, NC, USA
| | - Daniel L. Rodkey
- Department of Orthopaedic Surgery, Madigan Army Medical Center, Joint Base Lewis-McChord, WA, USA
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Kollmann NP, Langenberger B, Busse R, Pross C. Stability of hospital quality indicators over time: A multi-year observational study of German hospital data. PLoS One 2023; 18:e0293723. [PMID: 37934753 PMCID: PMC10629650 DOI: 10.1371/journal.pone.0293723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 10/19/2023] [Indexed: 11/09/2023] Open
Abstract
BACKGROUND Retrospective hospital quality indicators can only be useful if they are trustworthy signals of current or future quality. Despite extensive longitudinal quality indicator data and many hospital quality public reporting initiatives, research on quality indicator stability over time is scarce and skepticism about their usefulness widespread. OBJECTIVE Based on aggregated, widely available hospital-level quality indicators, this paper sought to determine whether quality indicators are stable over time. Implications for health policy were drawn and the limited methodological foundation for stability assessments of hospital-level quality indicators enhanced. METHODS Two longitudinal datasets (self-reported and routine data), including all hospitals in Germany and covering the period from 2004 to 2017, were analysed. A logistic regression using Generalized Estimating Equations, a time-dependent, graphic quintile representation of risk-adjusted rates and Spearman's rank correlation coefficient were used. RESULTS For a total of eight German quality indicators significant stability over time was demonstrated. The probability of remaining in the best quality cluster in the future across all hospitals reached from 46.9% (CI: 42.4-51.6%) for hip replacement reoperations to 80.4% (CI: 76.4-83.8%) for decubitus. Furthermore, graphical descriptive analysis showed that the difference in adverse event rates for the 20% top performing compared to the 20% worst performing hospitals in the two following years is on average between 30% for stroke and AMI and 79% for decubitus. Stability over time has been shown to vary strongly between indicators and treatment areas. CONCLUSION Quality indicators were found to have sufficient stability over time for public reporting. Potentially, increasing case volumes per hospital, centralisation of medical services and minimum-quantity regulations may lead to more stable and reliable quality of care indicators. Finally, more robust policy interventions such as outcome-based payment, should only be applied to outcome indicators with a higher level of stability over time. This should be subject to future research.
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Affiliation(s)
| | - Benedikt Langenberger
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
| | - Reinhard Busse
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
| | - Christoph Pross
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany
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Shankar DS, Lin CC, Gambhir N, Anil U, Alben MG, Youm T. Increased 90-Day Readmissions and Complications Following Hip Arthroscopy in Centers With Low Surgical Volume in New York State. Arthroscopy 2023; 39:2302-2309. [PMID: 37116552 DOI: 10.1016/j.arthro.2023.03.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 03/25/2023] [Accepted: 03/31/2023] [Indexed: 04/30/2023]
Abstract
PURPOSE To (1) classify surgical centers in New York State by volume of hip arthroscopies performed, (2) calculate rates of readmissions and complications by center volume, and (3) identify socioeconomic predictive factors for readmissions and complications following hip arthroscopy. METHODS Patients who underwent hip arthroscopy at New York State health care facilities from 2010 to 2020 were retrospectively identified using the New York Statewide Planning and Research Cooperative System (SPARCS) database. Hip arthroscopic procedures were identified using the following Current Procedural Terminology codes. Surgical center volumes were classified into 3 categories: low (<85th percentile), medium (85th-95th percentile), and high (>95th percentile). Incidence of readmissions and complications within 90 days was abstracted from SPARCS. Neighborhood socioeconomic status was quantified using the U.S. Area Deprivation Index. Multivariable logistic regression was used to determine whether center volume and other socioeconomic variables were independent predictors of outcomes. RESULTS In total, 50,252 patients who underwent hip arthroscopy were identified in SPARCS from 2010 to 2020. Of these patients, 13,861 (27.6%) underwent surgery at low-volume centers, 11,757 (23.4%) at medium-volume centers, and 24,634 (49.0%) at high-volume centers. Minorities, publicly insured patients, and patients from lower socioeconomic status neighborhoods made up a larger proportion of cases seen by low-volume centers versus high-volume centers (P < .001). Patients in the low-volume group experienced significantly greater 90-day rates of readmissions (P < .001) and all-cause complications (P < .001) than the other groups. Furthermore, high-volume centers were independently associated with lower odds of readmission (odds ratio 0.57, P < .001) and all-cause complications (odds ratio 0.73, P < .001) versus low-volume centers. CONCLUSIONS Low-volume surgical centers are associated with increased readmission and complication rates following hip arthroscopy, independent of other socioeconomic factors such as age, sex, race, insurance status, and neighborhood socioeconomic status. LEVEL OF EVIDENCE Level III, retrospective comparative prognostic trial.
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Affiliation(s)
- Dhruv S Shankar
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A
| | - Charles C Lin
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A
| | - Neil Gambhir
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A
| | - Utkarsh Anil
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A
| | - Matthew G Alben
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A
| | - Thomas Youm
- Department of Orthopedic Surgery, New York University Langone Health, New York, New York, U.S.A..
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Lachance AD, Call C, Radford Z, Stoddard H, Sturgeon C, Babikian G, Rana A, McGrory BJ. Rural-Urban Differences in Hospital and Patient-Reported Outcomes Following Total Hip Arthroplasty. Arthroplast Today 2023; 23:101190. [PMID: 37731592 PMCID: PMC10507436 DOI: 10.1016/j.artd.2023.101190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 07/04/2023] [Accepted: 07/08/2023] [Indexed: 09/22/2023] Open
Abstract
Background Rural patients have unique health-care factors influencing outcomes of arthroplasty, hypothetically putting these patients at increased risk for complications following total joint arthroplasty. The aim of this study is to better understand differences in patient outcomes and satisfaction between rural and urban patients receiving care in an urban setting and to provide more equitable care. Methods A retrospective chart review was performed on patients undergoing primary total hip arthroplasty at a single large academic center between January 2013 and August 2020. Demographic, operative, and hospital outcomes were obtained from the institutional electronic medical record. Rurality was determined by rural-urban code (RUC) classifications by zip code with RUC codes 1-3 defined as urban and RUC 4-10 defined as rural. Results Patients from urban areas were more likely to visit the emergency department within 30 days postoperatively (P = .006) and be readmitted within 90 days (P < .001). However, unplanned (P < .001) admissions were higher in the rural group. There was no statistical difference in postoperative complications (P = .4). At 6 months, rural patients had higher patient-reported outcome measures (PROMs) including Hip Disability and Osteoarthritis Outcome Score total (P = .05), Hip Disability and Osteoarthritis Outcome Score interval (P = .05), self-reported functional improvement (P < .05), improvements in pain (P < .05), and that the surgery met expectations (P < .05). However, these values did not reach minimal clinically important difference. Conclusions There may be differences in emergency department visits, readmissions, and PROMs in rural vs urban populations undergoing total hip arthroplasty in an urban setting. Patient access to care and attitudes of rural patients toward health care may underlie these findings. Understanding differences in PROMs, satisfaction, and hospital-based outcomes based on rurality is essential to provide equitable arthroplasty care.
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Affiliation(s)
| | | | - Zachary Radford
- Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, CT, USA
| | - Henry Stoddard
- MaineHealth Institute for Research, Maine Medical Center, Portland, ME, USA
| | - Callahan Sturgeon
- MaineHealth Institute for Research, Maine Medical Center, Portland, ME, USA
| | - George Babikian
- MaineHealth Institute for Research, Maine Medical Center, Portland, ME, USA
| | - Adam Rana
- MaineHealth Institute for Research, Maine Medical Center, Portland, ME, USA
- Tufts University School of Medicine, Maine Medical Center, Portland, ME, USA
| | - Brian J. McGrory
- MaineHealth Institute for Research, Maine Medical Center, Portland, ME, USA
- Tufts University School of Medicine, Maine Medical Center, Portland, ME, USA
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Bloch BV, Matar HE, Berber R, Gray WK, Briggs TWR, James PJ, Manktelow ARJ. The impact of a revision arthroplasty network on patient outcomes. Bone Joint J 2023; 105-B:641-648. [PMID: 37257848 DOI: 10.1302/0301-620x.105b6.bjj-2022-0931.r1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Aims Revision total knee arthroplasty (rTKA) and revision total hip arthroplasty (rTHA) are complex procedures with higher rates of re-revision, complications, and mortality compared to primary TKA and THA. We report the effects of the establishment of a revision arthroplasty network (the East Midlands Specialist Orthopaedic Network; EMSON) on outcomes of rTKA and rTHA. Methods The revision arthroplasty network was established in January 2015 and covered five hospitals in the Nottinghamshire and Lincolnshire areas of the East Midlands of England. This comprises a collaborative weekly multidisciplinary meeting where upcoming rTKA and rTHA procedures are discussed, and a plan agreed. Using the Hospital Episode Statistics database, revision procedures carried out between April 2011 and March 2018 (allowing two-year follow-up) from the five network hospitals were compared to all other hospitals in England. Age, sex, and mean Hospital Frailty Risk scores were used as covariates. The primary outcome was re-revision surgery within one year of the index revision. Secondary outcomes were re-revision surgery within two years, any complication within one and two years, and median length of hospital stay. Results A total of 57,621 rTHA and 33,828 rTKA procedures were performed across England, of which 1,485 (2.6%) and 1,028 (3.0%), respectively, were conducted within the network. Re-revision rates within one year for rTHA were 7.3% and 6.0%, and for rTKA were 11.6% and 7.4% pre- and postintervention, respectively, within the network. This compares to a pre-to-post change from 7.4% to 6.8% for rTHA and from 11.7% to 9.7% for rTKA for the rest of England. In comparative interrupted time-series analysis for rTKA there was a significant immediate improvement in one-year re-revision rates for the revision network compared to the rest of England (p = 0.024), but no significant change for rTHA (p = 0.504). For the secondary outcomes studied, there was a significant improvement in trend for one- and two-year complication rates for rTHA for the revision network compared to the rest of England. Conclusion Re-revision rates for rTKA and complication rates for rTHA improved significantly at one and two years with the introduction of a revision arthroplasty network, when compared to the rest of England. Most of the outcomes studied improved to a greater extent in the network hospitals compared to the rest of England when comparing the pre- and postintervention periods.
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Affiliation(s)
- Benjamin V Bloch
- Nottingham Elective Orthopaedic Services, Nottingham University Hospitals NHS Trust, Nottingham, UK
- School of Medicine, University of Nottingham, Nottingham, UK
| | - Hosam E Matar
- Nottingham Elective Orthopaedic Services, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Reshid Berber
- Nottingham Elective Orthopaedic Services, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - William K Gray
- Getting it Right First Time Programme, NHS England, London, UK
| | - Timothy W R Briggs
- Getting it Right First Time Programme, NHS England, London, UK
- NHS England, London, UK
- Royal National Orthopaedic Hospital, Stanmore, UK
| | - Peter J James
- Nottingham Elective Orthopaedic Services, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Andrew R J Manktelow
- Nottingham Elective Orthopaedic Services, Nottingham University Hospitals NHS Trust, Nottingham, UK
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10
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Testa EJ, Brodeur PG, Lama CJ, Hartnett DA, Painter D, Gil JA, Cruz AI. The Effect of Surgeon and Hospital Volume on Morbidity and Mortality After Femoral Shaft Fractures. J Am Acad Orthop Surg Glob Res Rev 2023; 7:01979360-202305000-00009. [PMID: 37141166 PMCID: PMC10162792 DOI: 10.5435/jaaosglobal-d-22-00242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 02/19/2023] [Indexed: 05/05/2023]
Abstract
OBJECTIVES The aim of this study was to characterize the case volume dependence of both facilities and surgeons on morbidity and mortality after femoral shaft fracture (FSF) fixation. METHODS Adults who had an open or closed FSF between 2011 and 2015 were identified in the New York Statewide Planning and Research Cooperative System database. Claims were identified by International Classification of Disease-9, Clinical Modification diagnostic codes for a closed or open FSF and International Classification of Disease-9, Clinical Modification procedure codes for FSF fixation. Readmission, in-hospital mortality, and other adverse events were compared across surgeon and facility volumes using multivariable Cox proportional hazards regression, controlling for patient demographic and clinical factors. Surgeon and facility volumes were compared between the lowest and highest 20% to represent low-volume and high-volume surgeons/facilities. RESULTS Of 4,613 FSF patients identified, 2,824 patients were treated at a high or low-volume facility or by a high or low-volume surgeon. Most of the examined complications including readmission and in-hospital mortality showed no statistically significant differences. Low-volume facilities had a higher 1-month rate of pneumonia. Low-volume surgeons had a lower 3-month rate of pulmonary embolism. CONCLUSION There is minimal difference in outcomes in relation to facility or surgeon case volume for FSF fixation. As a staple of orthopaedic trauma care, FSF fixation is a procedure that may not require specialized orthopaedic traumatologists at high-volume facilities.
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Affiliation(s)
- Edward J Testa
- From the Department of Orthopaedic Surgery, Brown University, Warren Alpert School of Medicine, Providence, RI
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11
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Comorbidity, Racial, and Socioeconomic Disparities in Total Knee and Hip Arthroplasty at High Versus Low-Volume Centers. J Am Acad Orthop Surg 2023; 31:e264-e270. [PMID: 36729540 DOI: 10.5435/jaaos-d-22-00665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 10/22/2022] [Indexed: 02/03/2023] Open
Abstract
INTRODUCTION The purpose of this study was to compare the epidemiologic and demographic profiles and inpatient postoperative complication and economic outcomes of patients undergoing total joint arthroplasty of the hip and knee (TJA) at high-volume centers (HVCs) versus low-volume centers (LVCs) using a large national registry. METHODS This retrospective cohort study used data from the National Inpatient Sample from 2006 to the third quarter of 2015. Discharges representing patients aged 40 years or older receiving a primary total hip arthroplasty or total knee arthroplasty were included. Patients were stratified into those undergoing their procedure at HVCs versus LVCs. Epidemiologic, demographic, and inpatient postoperative complications and economic outcomes were comparatively analyzed between groups. RESULTS A total of 7,694,331 TJAs were conducted at HVCs while 1,044,358 were conducted at LVCs. Patients at LVCs were more likely to be female, be Hispanic, be non-Hispanic Black, and use Medicare and Medicaid than patients at HVCs. Of the 29 Elixhauser comorbidities examined, 14 were markedly higher at LVCs while 11 were markedly higher at HVCs. Patients who underwent TJA at LVCs were more likely to develop cardiac, respiratory, gastrointestinal, genitourinary, hematoma/seroma, wound dehiscence, and postoperative infection complications and were more likely to die during hospitalization. Patients at HVCs were more likely to develop postoperative anemia. Length of stay and total charges were higher at LVCs compared with HVCs. DISCUSSION There are notable differences in the demographics, epidemiologic characteristics, and inpatient outcomes of patients undergoing TJA at HVCs versus LVCs. Attention should be directed to identifying and applying the specific resources, processes, and practices that improve outcomes at HVCs while referral practices and centralization efforts should be mindful to not worsen already existing disparities.
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12
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The Effect of Surgeon and Hospital Volume on Total Hip Arthroplasty Patient-Reported Outcome Measures: An American Joint Replacement Registry Study. J Am Acad Orthop Surg 2023; 31:205-211. [PMID: 36450013 DOI: 10.5435/jaaos-d-22-00525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 10/08/2022] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Some studies have shown lower morbidity and mortality rates with increased surgeon and hospital volumes after total hip arthroplasty (THA). This study sought to determine the relationship between surgeon and hospital volumes and patient-reported outcome measures after THA using American Joint Replacement Registry data. METHODS Using American Joint Replacement Registry data from 2012 to 2020, 4,447 primary, elective THAs with both preoperative and 1-year postoperative Hip Dysfunction and Osteoarthritis Outcome Score for Joint Replacement (HOOS-JR) scores were analyzed. This study was powered to detect the minimum clinically important difference (MCID). The main exposure variables were median annual surgeon and hospital volumes. Tertiles were formed based on the median annual number of THAs conducted: low-volume (1 to 42), medium-volume (42 to 96), and high-volume (≥96) surgeons and low-volume (1 to 201), medium-volume (201 to 392), and high-volume (≥392) hospitals. Mean preoperative and 1-year postoperative HOOS-JR scores were compared. RESULTS Preoperative HOOS-JR scores were significantly higher at high-volume hospitals than low-volume and medium-volume hospitals (49.66 ± 15.19 vs. 47.68 ± 15.09 and 48.34 ± 15.22, P < 0.001), although these differences were less than the MCID. At the 1-year follow-up, no difference was noted with no resultant MCID. Preoperative and 1-year HOOS-JR scores did not markedly vary with surgeon volume. In multivariate regression, low-volume and medium-volume surgeons and hospitals had similar odds of MCID achievement in HOOS-JR scores compared with high-volume surgeons and hospitals, respectively. CONCLUSION Using the HOOS-JR score as a validated patient-reported outcome measure, higher surgeon or hospital THA volume did not correlate with higher postoperative HOOS-JR scores or greater chances of MCID achievement in HOOS-JR scores compared with medium and lower volume surgeons and hospitals.
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Prkić A, Vermeulen NP, Kooistra BW, The B, van den Bekerom MPJ, Eygendaal D. Is there a relationship between surgical volume and outcome for total elbow arthroplasty? A systematic review. EFORT Open Rev 2023; 8:45-51. [PMID: 36705616 PMCID: PMC9969007 DOI: 10.1530/eor-22-0087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Purpose Total elbow arthroplasty (TEA) is rarely performed compared to other arthroplasties. For many surgical procedures, literature shows better outcomes when they are performed by experienced surgeons and in so-called 'high-volume' hospitals. We systematically reviewed the literature on the relationship between surgical volume and outcomes following TEA. Methods A literature search was performed using the MEDLINE, EMBASE and CINAHL databases. The literature was systematically reviewed for original studies comparing TEA outcomes among hospitals or surgeons with different annual or career volumes. For each study, data were collected on study design, indications for TEA, number of included patients, implant types, cut-off values for volume, number and types of complications, revision rate and functional outcome measures. The methodological quality of the included studies was assessed using the Newcastle-Ottawa Scale. Results Two studies, which included a combined 2301 TEAs, found that higher surgeon volumes were associated with lower revision rates. The examined complication rates did not differ between high- and low-volume surgeons. In one study, low-hospital volume is associated with an increased risk of revision compared to high-volume hospitals, but for other complication types, no difference was found. Conclusions Based on the results, the evidence suggests that high-volume centers have a lower revision rate in the long term. No minimum amount of procedures per year can be advised, as the included studies have different cut-off values between groups. As higher surgeon- and center-volume, (therefore presumably experience) appear to yield better outcomes, centralization of total elbow arthroplasty should be encouraged.
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Affiliation(s)
- A Prkić
- Department of Orthopedic Surgery, Upper Limb Section, Amphia Hospital, Breda, The Netherlands,Amsterdam UMC Location University of Amsterdam, Department of Orthopedic Surgery and Sports Medicine, Amsterdam, The Netherlands,Correspondence should be addressed to A Prkić;
| | - N P Vermeulen
- Department of Orthopedic Surgery, Upper Limb Section, Amphia Hospital, Breda, The Netherlands
| | - B W Kooistra
- Department of Orthopedic Surgery, Upper Limb Section, Amphia Hospital, Breda, The Netherlands,Department of Orthopedic Surgery, Shoulder and Elbow Unit, OLVG, Amsterdam, The Netherlands,Department of Orthopedic Surgery, Medische Kliniek Velsen, Velsen-Noord, The Netherlands
| | - B The
- Department of Orthopedic Surgery, Upper Limb Section, Amphia Hospital, Breda, The Netherlands
| | - M P J van den Bekerom
- Department of Orthopedic Surgery, Medische Kliniek Velsen, Velsen-Noord, The Netherlands,Department of Human Movement Sciences, Faculty of Behavioural and Movement Sciences, Vrije Universiteit Amsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands
| | - D Eygendaal
- Department of Orthopedic Surgery and Sports Medicine, ErasmusMC, Rotterdam, The Netherlands
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14
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Lourens EC, Kurmis AP, Holder C, de Steiger RN. Early Revision Rates of Total Hip Arthroplasty Using the Intellijoint HIP Computer Navigation System: A Study From the Australian National Joint Replacement Registry of 1911 Procedures. Arthroplast Today 2022; 18:149-156. [PMID: 36338290 PMCID: PMC9633565 DOI: 10.1016/j.artd.2022.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/29/2022] [Accepted: 09/27/2022] [Indexed: 11/08/2022] Open
Abstract
Background Total hip arthroplasty (THA) is an effective treatment for symptomatic hip osteoarthritis. The aim of this study was to determine the revision outcome of commercially available navigation technologies. Methods Data from the Australian Orthopaedic Association National Joint Replacement Registry from January 2016 to December 2020 included all primary THA procedures performed for osteoarthritis. Procedures using the Intellijoint HIP navigation system were identified and compared to procedures using "other" computer navigation systems and to nonnavigated procedures. The cumulative percent revision (CPR) was compared between the 3 groups using Kaplan-Meier estimates of survivorship and hazard ratios from Cox proportional hazards models, adjusted for age and gender. Results There were 1911 procedures that used the Intellijoint system, 4081 used "other" computer navigation systems, and 160,661 were nonnavigated procedures. The all-cause 2-year CPR rate for the Intellijoint system was 1.8% (95% confidence interval [CI], 1.2-2.6), compared to 2.2% (95% CI, 1.8-2.8) for other navigated cases and 2.2% (95% CI, 2.1-2.3) for nonnavigated cases. A prosthesis analysis identified the Paragon/Acetabular Shell THAs combined with the Intellijoint system to have a higher (3.4%) rate of revision than nonnavigated THAs (hazard ratio = 2.00 [95% CI, 1.01-4.00], P = .048). When this combination was excluded, the Intellijoint group demonstrated a 2-year CPR of 1.3%. There was no statistical difference in the CPR between the 3 groups before or after excluding the Paragon/Acetabular Shell system. Conclusions The preliminary data presented demonstrate no statistical difference in all-cause revision rates when comparing the Intellijoint system with "other" navigation systems and "nonnavigated" approaches for primary THAs. Level of evidence III (National registry analysis).
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Affiliation(s)
| | - Andrew P. Kurmis
- Department of Orthopaedic Surgery, Lyell McEwin Hospital, Elizabeth Vale, South Australia, Australia
- Discipline of Medical Specialties, University of Adelaide, Adelaide, South Australia, Australia
| | - Carl Holder
- South Australian Health and Medical Research Institute (SAHMRI), Adelaide, South Australia, Australia
| | - Richard N. de Steiger
- Department of Surgery, Epworth Healthcare, University of Melbourne, Melbourne, Australia
- Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, South Australia, Autralia
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EDWARDS NM, KRISTIANSEN EB, VARNUM C, OVERGAARD S, NELISSEN RGHH, PEDERSEN AB. The association between socioeconomic status and the 90-day risk of cardiovascular events after total hip arthroplasty - registry-based study of 103,286 patients. Acta Orthop 2022; 93:837-848. [PMID: 36341544 PMCID: PMC9638845 DOI: 10.2340/17453674.2022.5253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND AND PURPOSE Patients receiving a total hip arthroplasty (THA) are subsequently at an increased risk of cardiovascular disease (CVD). Further, socioeconomic status (SES) has an effect on CVD. We evaluated whether low SES is associated with a higher risk of readmission due to CVD after THA within 90 days in a setting with universal tax-supported healthcare. PATIENTS AND METHODS We performed a nationwide population-based cohort study using Danish health registries from 1995 to 2017. Individual-based information on SES markers (cohabitation, education, income, and liquid assets) was obtained for all participants. The outcome was any hospital-treated CVD. The data was transformed using the pseudo-observation method to enable an estimation of the adjusted risk ratios (RRs) with 95% confidence intervals (CI) for each marker using generalized linear regression. RESULTS Among 103,286 THA patients, 452 were hospitalized with CVD within 90 days after surgery. Low SES seemed to be associated with a small increased risk of CVD, as the RRs for any CVD were 1.1 (95% CI 0.7-1.7) for patients living alone vs. cohabiting, 1.3 (CI 0.7- .3) for low education vs. high, 1.4 (CI 0.8-2.6) for low income vs. high, and 1.3 (CI 0.8-2.1) for low liquid assets vs. high. CONCLUSION Living alone, low education, low income, and low liquid assets seem to be associated with a small increased risk of readmission due to CVD 90 days after THA. Wide confidence intervals in risk should be considered when interpreting the study results.
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Affiliation(s)
- Nina M EDWARDS
- Department of Clinical Epidemiology, Aarhus University Hospital, Denmark,Department of Orthopaedic Surgery, Regionshospitalet Horsens, Denmark
| | | | - Claus VARNUM
- Department of Orthopaedic Surgery, Lillebaelt Hospital—Vejle, Denmark; Department of Regional Health Research, University of Southern Denmark, Denmark,Danish Hip Arthroplasty Register
| | - Søren OVERGAARD
- Danish Hip Arthroplasty Register,Department of Orthopaedic Surgery and Traumatology, Copenhagen University Hospital, Bispebjerg, University of Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, Denmark
| | - Rob G H H NELISSEN
- Department Orthopaedics, Leiden University Medical Center, Leiden, Netherlands
| | - Alma B PEDERSEN
- Department of Clinical Epidemiology, Aarhus University Hospital, Denmark,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
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Pappas MA, Spindler KP, Hu B, Higuera-Rueda CA, Rothberg MB. Volume and Outcomes of Joint Arthroplasty. J Arthroplasty 2022; 37:2128-2133. [PMID: 35568138 PMCID: PMC10448867 DOI: 10.1016/j.arth.2022.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/16/2022] [Accepted: 05/04/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Joint arthroplasties are among the most commonly performed elective surgeries in the United States. Surgical outcomes are known to improve with volume but it is unclear whether this has led to consolidation among elective surgeries. We examined trends in volumes per surgeon and hospital to assess whether the known volume-outcome relationship has led to consolidation in elective joint arthroplasty and to determine if there exist volume thresholds above which outcomes do not change. METHODS Among Medicare beneficiaries who underwent either total knee or total hip arthroplasty from 2009 through 2015, we described volume trends and used mixed-effect models to relate annual surgeon and hospital volumes with 30-day complications or mortality. We tested for optimal volume cut points at both the hospital and surgeon level. RESULTS Adjusted annual complication rates were inversely associated with volume for both procedures at both the surgeon level and hospital level, but there was minimal consolidation between 2009 and 2015. Complications no longer declined after volumes of each case exceeded 260 per year. The vast majority of cases (around 93% of hip and 88% of knee arthroplasties) were performed by surgeons operating at suboptimal volumes. CONCLUSION More than 2 decades after the volume-outcome relationship was established for joint arthroplasty, many cases continue to be performed by low-volume surgeons, with far more cases performed by surgeons operating at suboptimal volumes. Further improvement could be expected through consolidation at both the hospital and surgeon level, with a target of at least 260 cases per surgeon annually for each operation. Payers seem best-equipped to drive consolidation.
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Affiliation(s)
- Matthew A Pappas
- Center for Value-based Care Research, Cleveland Clinic, Cleveland, Ohio; Department of Hospital Medicine, Cleveland Clinic, Cleveland, Ohio; Outcomes Research Consortium, Cleveland, Ohio
| | - Kurt P Spindler
- Department of Orthopedic Surgery, Cleveland Clinic, Cleveland, Ohio
| | - Bo Hu
- Department of Quantitative Health Sciences, Cleveland Clinic, Cleveland, Ohio
| | | | - Michael B Rothberg
- Center for Value-based Care Research, Cleveland Clinic, Cleveland, Ohio; Department of Internal Medicine, Cleveland Clinic, Cleveland, Ohio
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Incidence and predictors of blood transfusions in one-stage bilateral total hip arthroplasty: a single center prospective cohort study. Arch Orthop Trauma Surg 2022; 142:3549-3554. [PMID: 34812920 DOI: 10.1007/s00402-021-04255-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 11/07/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The safety of performing one-stage bilateral total hip arthroplasty (THA) remains controversial among the orthopedic community. The aim of the present study was to determine the incidence and predictors of blood transfusions in one-stage bilateral THA performed in a high-volume single center. PATIENTS AND METHODS Patients undergoing one-stage bilateral THA between 2015 and 2017 were included. The following data were collected from the hospital medical records: age, body mass index (BMI), American Society of Anaesthesiologists (ASA) score, smoking habit, comorbidities, preoperative serum creatinine, serum iron, ferritin, C-reactive protein (CRP), and hemoglobin (Hb). The Hb levels at postoperative day 1 and 3 were also collected. RESULTS A total of 367 patients with a mean age of 56.1 years (range, 32-79) were included. Forty-eight (13%) patients were transfused with a mean number of 1.6 blood units per patient. In non-transfused patients, the average Hb drop was 3.6 (SD ± 1) g/dL and 4.9 g/dL (SD ± 1.3) at postoperative day 1 and day 3, respectively. The average preoperative Hb level was 14.64 (SD ± 1.21) g/dL. In the univariate logistic regression, the following variables were predictive factors for transfusions: male gender (OR 0.447; P = 0.01), preoperative hemoglobin level (OR 0.622; P = 0.001), preoperative ferritin level (OR 0.995; P = 0.016), BMI (OR 0.837; P = 0.001), cardiopathy (OR 3.534; P = 0.046), preoperative anaemia (OR 10.54; P = 0.011). In the multivariate logistic regression only preoperative hemoglobin level (OR 0.666; P = 0.01), and BMI (OR 0.868; P = 0.007) were statistically significant. CONCLUSIONS The incidence of blood transfusions after one-stage bilateral THA is low in non-anemic patients operated on at a high-volume arthroplasty center. The main predictors of blood transfusions are preoperative Hb level and BMI.
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Paziuk T, Sutton R, McEntee R, Farronato D, Krieg J. Lateral femoral distraction is a safe and necessary adjunct for articulator visualization during the operative treatment of tibial plateau fractures. J Orthop 2022; 33:44-47. [PMID: 35833181 PMCID: PMC9272134 DOI: 10.1016/j.jor.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 11/19/2022] Open
Abstract
Introduction Recent evidence suggests use of lateral femoral distractor (LFD) to aid in visualization during surgery for tibial plateau fractures (TPF) may result in an unacceptably high rate of iatrogenic peroneal nerve palsy. We sought to evaluate femoral distractor use for open reduction internal fixation (ORIF) of TPF and quantify the incidence of peroneal nerve palsy. Methods We retrospectively evaluated all patients undergoing ORIF of TPF between 2014 and 2019 by a single fellowship trained orthopaedic traumatologist at a single Level 1 trauma center. Inclusion criteria were use of a LFD during ORIF of TPF. Exclusion criteria were preoperative neurovascular injury in the operative extremity and distraction via pre-existing external fixator. Parameters included patient demographic variables, intraoperative techniques, postoperative outcomes, and fracture classification. Documented clinical exam was used to evaluate peroneal nerve status and injuries were classified as complete or incomplete. Incomplete injuries were classified as sensory or motor. Results Of 303 patients undergoing ORIF for a TPF, femoral distraction was used in 254 (83.8%) cases, with 201 utilizing applied intraoperative femoral distraction and 53 utilizing pre-existing knee-spanning external fixation for distraction. Three patients were excluded for preoperative sensory peroneal nerve palsy with 175 patients meeting inclusion criteria. The most common fracture type was lateral split depression (n = 130). Zero patients developed complete or incomplete peroneal nerve palsy. Discussion Our study found no incidence of peroneal nerve palsy when using lateral femoral distraction. This study supports the utilization of lateral distraction for articular visualization and reduction during ORIF of TPF.
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Affiliation(s)
- Taylor Paziuk
- Rothman Institute at Thomas Jefferson University, USA
| | - Ryan Sutton
- Rothman Institute at Thomas Jefferson University, USA
| | | | | | - James Krieg
- Rothman Institute at Thomas Jefferson University, USA
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Brodeur PG, Boduch A, Kim KW, Cohen EM, Gil JA, Cruz AI. Surgeon and Facility Volumes Are Associated With Social Disparities and Post-Operative Complications After Total Hip Arthroplasty. J Arthroplasty 2022; 37:S908-S918.e1. [PMID: 35151807 DOI: 10.1016/j.arth.2022.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Revised: 01/27/2022] [Accepted: 02/04/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The purpose of this study is to further characterize the volume dependence of facilities and surgeons on morbidity and mortality after total hip arthroplasty (THA). METHODS Adults who underwent THA from 2009 to 2014 were identified using International Classification of Diseases, Ninth Revision, Clinical Modification and Procedural codes in the New York Statewide Planning and Research Cooperative System database. Complication rates were compared across surgeon and facility volumes using multivariable Cox proportional hazards regression controlling for factors such as the Social Deprivation Index. Surgeon and facility volumes were compared between the low and high volume using cutoffs established by prior research. RESULTS In total, 99,832 patients were included. Low volume facilities had higher rates of readmission, urinary tract infection (UTI), acute renal failure, pneumonia, surgical site infection (SSI), cellulitis, wound complications, deep vein thrombosis (DVT), in-hospital mortality, and revision. Low volume surgeons had higher rates of readmission, UTI, acute renal failure, pneumonia, SSI, acute respiratory failure, pulmonary embolism, cellulitis, wound complications, in-hospital mortality, cardiorespiratory arrest, DVT, and revision. African Americans, Hispanics, and those with federal insurance had increased rates of readmission. Those with ≥1 Charlson comorbidities or from areas of higher social deprivation had increased incidence of treatment by low volume surgeons and facilities. CONCLUSION Both low volume facilities and surgeons performing primary THA have higher rates of readmission, UTI, acute renal failure, pneumonia, SSI, cellulitis, wound complications, DVT, in-hospital mortality, and revision. Demographic disparities exist between who is treated at low vs high volume surgeons and facilities placing those groups at higher risks for complications.
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Affiliation(s)
- Peter G Brodeur
- The Warren Alpert Medical School of Brown University, Providence, RI
| | - Abigail Boduch
- Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Kang Woo Kim
- The Warren Alpert Medical School of Brown University, Providence, RI
| | - Eric M Cohen
- Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Joseph A Gil
- Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, RI
| | - Aristides I Cruz
- Department of Orthopaedic Surgery, The Warren Alpert Medical School of Brown University, Providence, RI
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The Effect of Femoral Fixation on Revision and Mortality Following Elective Total Hip Arthroplasty in Patients Over the Age of 65 years. An Analysis of the American Joint Replacement Registry. J Arthroplasty 2022; 37:1105-1110. [PMID: 35131391 DOI: 10.1016/j.arth.2022.01.088] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 01/22/2022] [Accepted: 01/30/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND With the overwhelming use of cementless femoral fixation for primary total hip arthroplasty in the United States, the associations of stem fixation on the risk of revision and mortality are poorly understood. We evaluated the relationship between femoral fixation and risk of revision and mortality in patients included in the American Joint Replacement Registry. METHODS Elective, primary, unilateral total hip arthroplasties in the American Joint Replacement Registry, in patients over the age of 65 years were considered. In total, 9,612 patients with a cemented stem were exact matched 1:1 with patients who received a cementless stem based on age, gender, and the Charlson Comorbidity Index. Outcomes compared between the groups included need and reason for revision at 90 days and 1 year; in-hospital, 90-day, and 1-year mortality; and mortality after early revision. Covariates were used in linear regression analyses. RESULTS Cemented fixation was associated with a 37% reduction in the risk of 90-day revision, and a reduction in the risk of revision for periprosthetic fracture of 87% at 90 days and 81% at 1 year. Cemented fixation was associated with increased 90-day and 1-year mortality (odds ratio [OR] 3.15, confidence interval [CI] 2.24-4.43 and OR 2.36, CI 1.86-3.01, respectively). Patients who underwent subsequent revision surgery within the first year exhibited the highest mortality risk (OR 3.23, CI 1.05-9.97). CONCLUSION In this representative sample of the United States, 90-day revision for any reason and for periprosthetic fracture was significantly reduced in patients with a cemented stem. This benefit must be weighed against the association with increased mortality and with the high risk of mortality associated with early revision, which was more prevalent with cementless fixation.
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21
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Effects of Hospital and Surgeon Volume on Patient Outcomes After Total Joint Arthroplasty: Reported From the American Joint Replacement Registry. J Am Acad Orthop Surg 2022; 30:e811-e821. [PMID: 35191864 DOI: 10.5435/jaaos-d-21-00946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 01/18/2022] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The purpose of this study was to evaluate outcomes and complications because it relates to surgeon and hospital volume for patients undergoing primary total hip arthroplasty (THA) and total knee arthroplasty (TKA) using the American Joint Replacement Registry from 2012 to 2017. METHODS A retrospective study was conducted on Medicare-eligible cases of primary elective THAs and TKAs reported to the American Joint Replacement Registry database and was linked with the available Centers of Medicaid and Medicare Services claims and the National Death Index data from 2012 to 2017. Surgeon and hospital volume were defined separately based on the median annual number of anatomic-specific total arthroplasty procedures performed on patients of any age per surgeon and per hospital. Values were aggregated into separate surgeon and hospital volume tertile groupings and combined to create pairwise comparison surgeon/hospital volume groupings for hip and knee. RESULTS Adjusted multivariable logistic regression analysis found low surgeon/low hospital volume to have the greatest association with all-cause revisions after THA (odds ratio [OR], 1.63, 95% confidence interval [CI], 1.41-1.89, P < 0.0001) and TKA (OR, 1.72, 95% CI, 1.44-2.06, P < 0.0001), early revisions because of periprosthetic joint infection after THA (OR, 2.50, 95% CI, 1.53-3.15, P < 0.0001) and TKA (OR, 2.18, 95% CI, 1.64-2.89, P < 0.0001), risk of early THA instability and dislocation (OR, 2.47, 95% CI, 1.77-3.46, P < 0.0001), and 90-day mortality after THA (OR, 1.72, 95% CI, 1.27-2.35, P = 0.0005) and TKA (OR, 1.47, 95% CI, 1.15-1.86, P = 0.002). CONCLUSION Our findings demonstrate considerably greater THA and TKA complications when performed at low-volume hospitals by low-volume surgeons. Given the data from previous literature including this study, a continued push through healthcare policies and healthcare systems is warranted to direct THA and TKA procedures to high-volume centers by high-volume surgeons because of the evident decrease in complications and considerable costs associated with all-cause revisions, periprosthetic joint infection, instability, and 90-day mortality. LEVEL OF EVIDENCE III.
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Zuke WA, Chughtai M, Emara AK, Zhou G, Koroukian SM, Molloy RM, Piuzzi NS. What Are Drivers of Readmission for Readmission-Requiring Venous Thromboembolic Events After Primary Total Hip Arthroplasty? An Analysis of 544,443 Cases. J Arthroplasty 2022; 37:958-965.e3. [PMID: 35065217 DOI: 10.1016/j.arth.2022.01.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/07/2022] [Accepted: 01/11/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Venous thromboembolism (VTE) is a potential postoperative complication after total hip arthroplasty (THA). These events present with a range of severity, and some require readmission. The present study aimed to identify unexplored risk factors for severe VTE that lead to hospital readmission. METHODS The Agency of Healthcare Research and Quality's National Readmissions Database was retrospectively queried for all patients who underwent primary THA (January 2016 to December 2018). Study population included patients who were readmitted for VTE within 90 days after an elective THA. Bivariate and multivariate regression analyses were performed using patient demographics, insurance status, elective nature of the surgery, healthcare institution characteristics, and baseline comorbidities. RESULTS Higher risk of readmission for VTE was evident among elderly (71-80 years vs <40 years: odds ratio [OR] 1.7, 95% confidence interval [CI] 1.3-2.2, P = .0002), male patients (OR 1.2, 95% CI 1.2-1.3). Nonelective THAs were associated with markedly higher odds of readmission for VTE (OR 20.5, 95% CI 18.9-22.2), peripheral vascular disease (OR 1.2, 95% CI 1.1-1.4), lymphoma (OR 1.5, 95% CI 1.1-2.1), metastatic cancer (OR 1.8, 95% CI 1.4-2.2), obesity (OR 1.5, 95% CI 1.4-1.6), and fluid-electrolyte imbalance (OR 1.1, 95% CI 1.0-1.2). Home health care (OR 0.8, 95% CI 0.7-0.8) and discharge to skilled nursing facility (OR 0.7, 95% CI 0.7-0.8) had lower odds of readmission for VTE vs unsupervised home discharge, while insurance type was not a significant driver(P > .05). CONCLUSION One in 135 THA patients is likely to experience a VTE requiring readmission after THA. Male patients, age >70 years, and specific baseline comorbidities increase such risk. Furthermore, discharge to a supervised setting mitigated the risk of VTE requiring readmission compared to unsupervised discharge. As VTE prophylaxis protocols continue to evolve, these patients may require optimized perioperative care pathways to mitigate VTE complications.
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Affiliation(s)
- William A Zuke
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
| | - Morad Chughtai
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
| | - Ahmed K Emara
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
| | - Guangjin Zhou
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
| | | | - Robert M Molloy
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
| | - Nicolas S Piuzzi
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, OH
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Khan MM, Khawar H, Perkins R, Pardiwala A. The positive impact of GIRFT (getting it right first time) on arthroplasty services in times of COVID-19. Ann Med Surg (Lond) 2022; 77:103655. [PMID: 35479660 PMCID: PMC9022398 DOI: 10.1016/j.amsu.2022.103655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/15/2022] [Accepted: 04/17/2022] [Indexed: 11/03/2022] Open
Abstract
Background Introduction Objectives Methodology Ethical approval and data consideration Results Conclusions Implementation of GIRFT (getting it right first time) guidelines at times of COVID 19 for arthroplasty services. Review of National Joint Registry (NJR) data in terms of contribution of arthroplasty services in post COVID world. Assessment of service structure of individual hospitals in terms of types of services involved. Recommendation for the future in terms of redistribution of service.
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Kim RG, An VVG, Lee SLK, Khadra SM, Petchell JF. Overlapping surgery in arthroplasty - a systematic review and meta-analysis. Orthop Traumatol Surg Res 2022; 109:103299. [PMID: 35472455 DOI: 10.1016/j.otsr.2022.103299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 01/31/2022] [Accepted: 03/30/2022] [Indexed: 02/03/2023]
Abstract
BACKGROUND Planned overlapping surgery can improve efficiency, reduce costs and help manage long waiting lists; yet, this practice has been questioned due to patient safety concerns. A systematic review and meta-analysis were performed to answer the question: (1) are there any differences in the risk of postoperative adverse outcomes; and (2) are there any differences in length of stay or length of surgery, in elective total hip arthroplasty (THA) and total knee arthroplasty (TKA) performed either as non-overlapping surgery (NOS) or overlapping surgery (OS). PATIENTS AND METHODS A systematic search of literature in the databases of MEDLINE, PubMed, Embase and Cochrane from dates of inception was performed. All studies published in English were included. Risk of Bias in Non-randomised Studies-of Interventions (ROBINS-I) and the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) framework were utilised. Relative risk (RR) was used for dichotomous outcomes, while mean difference (MD) was used for continuous variables, with 95% confidence intervals. Alpha was set at 0.05. RESULTS A total of nine studies with 120,625 patients were included for analyses. There were no statistically significant differences for overall rates of postoperative complications, dislocations, fractures, infections, readmissions or revision surgery nor with length of stay or length of surgery (p>0.05). Patient characteristics between groups were similar (p>0.05). DISCUSSION There were no differences in postoperative adverse outcomes for elective orthopaedic THA and TKA performed as NOS when compared to OS. Operating schedules for OS in elective lower limb arthroplasty appear to be safe, given appropriate patient selection processes and may be a useful method to improve hospital efficiency. Informed consent and preoperative patient education should remain paramount. LEVEL OF EVIDENCE IV.
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Affiliation(s)
- Raymond G Kim
- Department of Orthopaedic Surgery, Royal Prince Alfred Hospital, Missenden Road, 2050 Camperdown, NSW, Australia.
| | - Vincent V G An
- Department of Orthopaedic Surgery, Royal Prince Alfred Hospital, Missenden Road, 2050 Camperdown, NSW, Australia
| | - Sun Loong K Lee
- Department of Orthopaedic Surgery, Royal Prince Alfred Hospital, Missenden Road, 2050 Camperdown, NSW, Australia
| | - Sam M Khadra
- Department of Orthopaedic Surgery, Royal Prince Alfred Hospital, Missenden Road, 2050 Camperdown, NSW, Australia
| | - Jeffrey F Petchell
- Department of Orthopaedic Surgery, Royal Prince Alfred Hospital, Missenden Road, 2050 Camperdown, NSW, Australia
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Comparison of Utilization and Short-term Complications Between Technology-assisted and Conventional Total Hip Arthroplasty. J Am Acad Orthop Surg 2022; 30:e673-e682. [PMID: 35139053 DOI: 10.5435/jaaos-d-21-00698] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 01/02/2022] [Indexed: 02/01/2023] Open
Abstract
INTRODUCTION Although technology-assisted total hip arthroplasty (TA-THA) may improve implant positioning, it remains unknown whether TA-THA confers improved clinical outcomes. We sought to examine national TA-THA utilization trends and compare clinical outcomes between TA-THA and unassisted THA (U-THA). METHODS Patients who underwent primary, elective THA from 2010 to 2018 were identified using the American College of Surgeons National Surgical Quality Improvement Program database. Demographic, perioperative, and 30-day outcomes were queried and collected. Patients were stratified based on whether they underwent TA-THA, which included computer navigation or robotics, and U-THA. Propensity score matching paired patients undergoing TA-THA or U-THA on a 1:1 basis. RESULTS Of the 238,755 THA patients, 3,149 cases (1.3%) were done using TA-THA. Comparing the unmatched TA-THA and U-THA groups, race distribution (P < 0.001) and baseline functional status (P < 0.001) differed. Propensity score matching yielded 2,335 TA-THA and U-THA pairs. Perioperatively, the TA-THA cohort had longer mean surgical times (101.0 ± 34.0 versus 91.9 ± 38.8 minutes, P < 0.001), but lower transfusion rates (5.7% versus 7.8%, P = 0.005). As compared with the U-THA group, the TA-THA group had a shorter mean hospital length of stay (2.0 ± 1.1 versus 2.5 ± 2.0 days, P < 0.001) and a higher proportion of patients discharged home (85.8% versus 75.7%, P < 0.001). Notably, the TA-THA cohort had higher readmission rates (3.8% versus 2.4%, P < 0.001). Major complication and revision surgery rates did not markedly differ between groups. DISCUSSION TA-THA utilization rates remain low among orthopaedic surgeons. As compared with U-THA, TA-THA yield mixed perioperative and 30-day outcomes. Surgeons must consider the clinical benefits and drawbacks of TA-THA when determining the proper surgical technique and technology for each patient. Clinical trials assessing long-term functional and clinical outcomes between U-THA and TA-THA are required to further elucidate the utility of assistive technologies in THA. LEVEL III EVIDENCE Retrospective Cohort Study.
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Hoskins W, Rainbird S, Lorimer M, Graves SE, Bingham R. What Can We Learn From Surgeons Who Perform THA and TKA and Have the Lowest Revision Rates? A Study from the Australian Orthopaedic Association National Joint Replacement Registry. Clin Orthop Relat Res 2022; 480:464-481. [PMID: 34677162 PMCID: PMC8846272 DOI: 10.1097/corr.0000000000002007] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 09/17/2021] [Indexed: 01/31/2023]
Abstract
BACKGROUND Long-term implant survivorship in THA and TKA involves a combination of factors related to the patient, the implants used, and the decision-making and technical performance of the surgeon. It is unclear which of these factors is the most important in reducing the proportion of revision surgery. QUESTIONS/PURPOSES We used data from a large national registry to ask: In patients receiving primary THA and TKA for a diagnosis of osteoarthritis, do (1) the reasons for revision and (2) patient factors, the implants used, and the surgeon or surgical factors differ between surgeons performing THA and TKA who have a lower revision rate compared with all other surgeons? METHODS Data were analyzed for all THA and TKA procedures performed for a diagnosis of osteoarthritis from the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR) from September 1, 1999, when collection began, to December 31, 2018. The AOANJRR obtains data on more than 98% of joint arthroplasties performed in Australia. The 5-year cumulative percent revision (CPR) was identified for all THAs and TKAs performed for a diagnosis of osteoarthritis with 95% confidence intervals (overall CPR); the 5-year CPR with 95% CIs for each surgeon was calculated for THA and TKA separately. For surgeons to be included in the analysis, they had to have performed at least 50 procedures and have a 5-year CPR. The 5-year CPR with 95% CIs for each THA and TKA surgeon was compared with the overall CPR. Two groups were defined: low revision rate surgeons (the upper confidence level for a given surgeon at 5 years is less than 3.84% for THA and 4.32% for TKA), and all other surgeons (any surgeon whose CPR was higher than those thresholds). The thresholds were determined by setting a cutoff at 20% above the upper confidence level for that class. The approach we used to define a low revision rate surgeon was similar to that used by the AOANJRR for determining the better-performing prostheses and is recommended by the International Prosthesis Benchmarking Working Group. By defining the groups in this way, a significant difference between these two groups is created. Determining a reason for this difference is the purpose of presenting the proportions of different factors within each group. The study group for THA included 116 low revision rate surgeons, who performed 88,392 procedures (1619 revised, 10-year CPR 2.7% [95% CI 2.6% to 2.9%]) and 433 other surgeons, who performed 170,094 procedures (6911 revised, 10-year CPR 5.9% [95% CI 5.7% to 6.0%]). The study group for TKA consisted of 144 low revision rate surgeons, who performed 159,961 procedures (2722 revised, 10-year CPR 2.6% [95% CI 2.5% to 2.8%]) and 534 other surgeons, who performed 287,232 procedures (12,617 revised, 10-year CPR 6.4% [95% CI 6.3% to 6.6%]). These groups were defined a priori by their rate of revision, and the purpose of this study was to explore potential reasons for this observed difference. RESULTS For THA, the difference in overall revision rate between low revision rate surgeons and other surgeons was driven mainly by fewer revisions for dislocation, followed by component loosening and fracture in patients treated by low revision rate surgeons. For TKA, the difference in overall revision rate between low revision rate surgeons and other surgeons was driven mainly by fewer revisions for aseptic loosening, followed by instability and patellofemoral complications in patients treated by low revision rate surgeons. Patient-related factors were generally similar between low revision rate surgeons and other surgeons for both THA and TKA. Regarding THA, there were differences in implant factors, with low revision rate surgeons using fewer types of implants that have been identified as having a higher-than-anticipated rate of revision within the AOANJRR. Low revision rate surgeons used a higher proportion of hybrid fixation, although cementless fixation remained the most common choice. For surgeon factors, low revision rate surgeons were more likely to perform more than 100 THA procedures per year, while other surgeons were more likely to perform fewer than 50 THA procedures per year. In general, the groups of surgeons (low revision rate surgeons and other surgeons) differed less in terms of years of surgical experience than they did in terms of the number of cases they performed each year, although low revision rate surgeons, on average, had more years of experience and performed more cases per year. Regarding TKA, there were more differences in implant factors than with THA, with low revision rate surgeons more frequently performing patellar resurfacing, using an AOANJRR-identified best-performing prosthesis combination (with the lowest rates of revision), using fewer implants that have been identified as having a higher-than-anticipated rate of revision within the AOANJRR, using highly crosslinked polyethylene, and using a higher proportion of cemented fixation compared with other surgeons. For surgeon factors, low revision rate surgeons were more likely to perform more than 100 TKA procedures per year, whereas all other surgeons were more likely to perform fewer than 50 procedures per year. Again, generally, the groups of surgeons (low revision rate surgeons and other surgeons) differed less in terms of years of surgical experience than they did in terms of the number of cases they performed annually, although low revision rate surgeons, on average, had more years of experience and performed more cases per year. CONCLUSION THAs and TKAs performed by surgeons with the lowest revision rates in Australia show reductions in all of the leading causes of revision for both THA and TKA, in particular, causes of revision related to the technical performance of these procedures. Patient factors were similar between low revision rate surgeons and all other surgeons for both THA and TKA. Low revision rate THA surgeons were more likely to use cement fixation selectively. Low revision rate TKA surgeons were more likely to use patella resurfacing, crosslinked polyethylene, and cemented fixation. Low revision rate THA and TKA surgeons were more likely to use an AOANJRR-identified best-performing prosthesis combination and to use fewer implants identified by the AOANJRR as having a higher-than-anticipated revision rate. To reduce the rate of revision THA and TKA, surgeons should consider addressing modifiable factors related to implant selection. Future research should identify surgeon factors beyond annual case volume that are important to improving implant survivorship. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Wayne Hoskins
- Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, Australia
- Traumaplasty Melbourne, East Melbourne, Australia
| | - Sophia Rainbird
- Australian Orthopaedic Association National Joint Replacement Registry, Adelaide, Australia
| | - Michelle Lorimer
- Department of Orthopaedics, Royal Melbourne Hospital, Parkville, Australia
| | - Stephen E. Graves
- South Australian Health and Medical Research Institute, Adelaide, Australia
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
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Broggi MS, Oladeji PO, Whittingslow DC, Wilson JM, Bradbury TL, Erens GA, Guild GN. Rural Hospital Designation Is Associated With Increased Complications and Resource Utilization After Primary Total Hip Arthroplasty: A Matched Case-Control Study. J Arthroplasty 2022; 37:513-517. [PMID: 34767910 DOI: 10.1016/j.arth.2021.11.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 10/31/2021] [Accepted: 11/02/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND As the prevalence of hip osteoarthritis increases, the demand for total hip arthroplasty (THA) has grown. It is known that patients in rural and urban geographic locations undergo THA at similar rates. This study explores the relationship between geographic location and postoperative outcomes. METHODS In this retrospective cohort study, the Truven MarketScan database was used to identify patients who underwent primary THA between January 2010 and December 2018. Patients with prior hip fracture, infection, and/or avascular necrosis were excluded. Two cohorts were created based on geographic locations: urban vs rural (rural denotes any incorporated place with fewer than 2500 inhabitants). Age, gender, and obesity were used for one-to-one matching between cohorts. Patient demographics, medical comorbidities, postoperative complications, and resource utilization were statistically compared between the cohorts using multivariate conditional logistic regression. RESULTS In total, 18,712 patients were included for analysis (9356 per cohort). After matching, there were no significant differences in comorbidities between cohorts. The following were more common in rural patients: dislocation within 1 year (odds ratio [OR] 1.23, 95% confidence interval [CI] 1.08-1.41, P < .001), revision within 1 year (OR 1.17, 95% CI 1.05-1.32, P = .027), and prosthetic joint infection (OR 1.14, 95% CI 1.04-1.34, P = .033). Similarly, rural patients had higher odds of 30-day readmission (OR 1.31, 95% CI 1.09-1.56, P = .041), 90-day readmission (OR 1.41, 95% CI 1.26-1.71, P = .023), and extended length of stay (≥3 days; OR 1.52, 95% CI 1.22-1.81, P < .001). CONCLUSION THA in rural patients is associated with increased cost, healthcare utilization, and complications compared to urban patients. Standardization between geographic areas could reduce this discrepancy.
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Affiliation(s)
- Matthew S Broggi
- Department of Orthopaedic Surgery, Emory University, Atlanta, GA
| | - Philip O Oladeji
- Department of Orthopaedic Surgery, Emory University, Atlanta, GA
| | | | - Jacob M Wilson
- Department of Orthopaedic Surgery, Emory University, Atlanta, GA
| | | | - Greg A Erens
- Department of Orthopaedic Surgery, Emory University, Atlanta, GA
| | - George N Guild
- Department of Orthopaedic Surgery, Emory University, Atlanta, GA
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Edwards NM, Varnum C, Nelissen RGHH, Overgaard S, Pedersen AB. The association between socioeconomic status and the 30- and 90-day risk of infection after total hip arthroplasty : a registry-based cohort study of 103,901 patients with osteoarthritis. Bone Joint J 2022; 104-B:221-226. [PMID: 35094583 DOI: 10.1302/0301-620x.104b2.bjj-2021-1030.r1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
AIMS The aim of this study was to examine whether socioeconomic status (SES) is associated with a higher risk of infections following total hip arthroplasty (THA) at 30 and 90 days. METHODS We obtained individual-based information on SES markers (cohabitation, education, income, and savings) on 103,901 THA patients from Danish health registries between 1 January 1995 and 31 December 2017. The primary outcome measure was any hospital-treated infection (i.e. all infections). The secondary outcomes were further specified to specific hospital-treated infections (pneumonia, urinary tract infection, and periprosthetic joint infection). The primary timepoint was within 90 days. In addition, the outcomes were further evaluated within 30 days. We calculated the cumulative incidence, and used the pseudo-observation method and generalized linear regression to estimate adjusted risk ratios (RRs) with 95% confidence intervals (CIs) for each marker. RESULTS The cumulative incidence of any infection at 90 days was highest in patients who lived alone (1.5% (95% CI 1.3 to 1.6)) versus cohabitant (0.7% (95% CI 0.7 to 0.8)), had the lowest educational achievement (1.1% (95% CI 1.0 to 1.2)) versus highest (0.7% (95% CI 0.5 to 0.8)), had the lowest income (1.6% (95% CI 1.5 to 1.70)) versus highest (0.4% (95% CI 0.3 to 0.5)), or had lowest savings (1.3% (95% CI 1.2 to 1.4)) versus highest (0.7% (95% CI 0.6 to 0.8)). Within 90 days, the RRs for any infection were 1.3 (95% CI 1.2 to 1.4) for patients living alone versus cohabiting, 1.2 (95% CI 1.0 to 1.3) for low education achievement versus high, 1.7 (95% CI 1.4 to 2.1) for low income versus high income, and 1.5 (95% CI 1.4 to 1.8) for low savings versus high savings. The same trends were also seen for any infections within the first 30 days. CONCLUSION Our study provides evidence that socioeconomic inequality adversely influences the risk of infection after THA, thus contributing to healthcare disparities and inequalities. We found that living alone, low educational achievement, low income, or low savings were associated with higher risks of infections within the first 30 and 90 days after THA. Therefore, the development of targeted intervention strategies with the aim of increasing awareness of patients identified as being at greatest risk is needed to mitigate the impact of SES on the risk of infections following THA. Cite this article: Bone Joint J 2022;104-B(2):221-226.
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Affiliation(s)
- Nina M Edwards
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark
| | - Claus Varnum
- Department of Orthopaedic Surgery, Lillebaelt Hospital, Vejle, Denmark.,Department of Regional Health Research, University of Southern Denmark, Odense, Denmark.,Department of Orthopaedic Surgery and Traumatology, Odense Universitetshospital, Odense, Denmark.,Danish Hip Arthroplasty Register, Copenhagen, Denmark
| | - Rob G H H Nelissen
- Department of Orthopaedics, Leids Universitair Medisch Centrum, Leiden, Netherlands
| | - Søren Overgaard
- Danish Hip Arthroplasty Register, Copenhagen, Denmark.,Copenhagen University Hospital, Bispebjerg Department of Orthopaedic Surgery and Traumatology, Frederiksberg Hospital, Copenhagen, Denmark.,Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Alma B Pedersen
- Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University Hospital, Aarhus, Denmark
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Kahlenberg CA, Gibbons JAB, Jannat-Khah DP, Goodman SM, Mandl LA, Sculco PK, Goodman SB, Figgie MP, Mehta BY. Use of Total Hip Arthroplasty in Patients Under 21 Years Old: A US Population Analysis. J Arthroplasty 2021; 36:3928-3933.e1. [PMID: 34456091 DOI: 10.1016/j.arth.2021.08.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND The purpose of this study is to evaluate trends in the use of total hip arthroplasty (THA) in the United States in patients under 21 years of age. Specifically, we examined the frequency of THA in this patient population over the past 2 decades, the epidemiologic characteristics of patients under 21 who underwent THA, and the characteristics of the hospitals where these procedures were performed. METHODS We retrospectively reviewed the Kids' Inpatient Database, an inpatient US national weighted sample of hospital admissions in patients under 21 from approximately 4200 hospitals in 46 states. We queried the database using Current Procedural Terminology codes for elective and non-elective primary THA for the years 2000-2016. We utilized the International Classification of Diseases, Ninth Revision and International Classification of Diseases, Tenth Revision codes to determine primary diagnoses. RESULTS The weighted total number of THAs performed in patients under 21 in the Kids' Inpatient Database increased from 347 in 2000 to 551 in 2016. The most common diagnoses were osteonecrosis, osteoarthritis, and inflammatory arthritis. The frequency of THA for osteonecrosis increased from 24% in 2000 to 38% in 2016, while the frequency of THA for inflammatory arthritis decreased from 27% in 2000 to 4% in 2016. CONCLUSION The number of THAs in patients under 21 in the United States has increased over the past 2 decades and these procedures are increasingly performed in urban teaching hospitals. The decrease in THA for inflammatory arthritis in this population likely reflects improvements in medical management during the study period.
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Affiliation(s)
| | - J Alex B Gibbons
- Division of Rheumatology, Department of Medicine, Hospital for Special Surgery, New York, NY
| | - Deanna P Jannat-Khah
- Division of Rheumatology, Department of Medicine, Hospital for Special Surgery, New York, NY; Division of Rheumatology, Department of Medicine, Weill Cornell Medicine, New York, NY
| | - Susan M Goodman
- Division of Rheumatology, Department of Medicine, Hospital for Special Surgery, New York, NY; Division of Rheumatology, Department of Medicine, Weill Cornell Medicine, New York, NY
| | - Lisa A Mandl
- Division of Rheumatology, Department of Medicine, Hospital for Special Surgery, New York, NY; Division of Rheumatology, Department of Medicine, Weill Cornell Medicine, New York, NY
| | - Peter K Sculco
- Department of Orthopedics, Hospital for Special Surgery, New York, NY
| | - Stuart B Goodman
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA
| | - Mark P Figgie
- Department of Orthopedics, Hospital for Special Surgery, New York, NY
| | - Bella Y Mehta
- Division of Rheumatology, Department of Medicine, Hospital for Special Surgery, New York, NY; Division of Rheumatology, Department of Medicine, Weill Cornell Medicine, New York, NY
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30
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Siebenmorgen JP, Stronach BM, Mears SC, Stambough JB. The Use of Intraoperative Digital Radiography Alignment Software to Assess Implant Placement in Total Hip Arthroplasty. Curr Rev Musculoskelet Med 2021; 14:369-377. [PMID: 34694562 DOI: 10.1007/s12178-021-09722-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/17/2021] [Indexed: 11/28/2022]
Abstract
PURPOSE OF REVIEW Total hip arthroplasty (THA) is a highly successful surgery with growing rates of utilization in the USA, but surgical outliers leading to postoperative complications remain a concern. There is need for a standard system of accurate, predictable intraoperative evaluation to decrease component positioning outliers. Many current intraoperative imaging systems have shown promise, but there are drawbacks that have led to slow adoption. Digital radiography, in conjunction with Radlink™ technology, is a potential solution to this problem. This review summarizes the clinical application and scientific literature regarding the use of Radlink™ in THA. RECENT FINDINGS Traditional surgeon-directed component placement can result in surgical outliers. This is especially true not only among low-volume arthroplasty surgeons, but can also occur with experienced, high-volume surgeons. Digital radiography allows for more precise and accurate placement of the acetabular cup in a targeted range in an effort to improve THA outcomes. Intraoperative images are obtained quickly, and they are accurate when compared to postoperative images. Additionally, the use of Radlink™ results in a significant decrease in leg length and femoral offset outliers. The adoption of Radlink™ technology in THA can significantly decrease surgical outliers, especially errors in acetabular cup placement, leg length, and femoral offset. Digital radiography avoids many of the previous aversions to intraoperative imaging as it produces a fast, reliable image with little radiation exposure and minimal interruption to workflow. There is the potential for Radlink™ use to provide superior patient outcomes, as a decrease in surgical outliers can minimize implant malpositioning with resultant need for revision THAs. Radlink™ may also provide benefit in analyzing other parameters, such as component sizing.
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Affiliation(s)
- Jacob P Siebenmorgen
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 West Markham Street, Slot 531, Little Rock, AR, 72205, USA
| | - Benjamin M Stronach
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 West Markham Street, Slot 531, Little Rock, AR, 72205, USA
| | - Simon C Mears
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 West Markham Street, Slot 531, Little Rock, AR, 72205, USA
| | - Jeffrey B Stambough
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, 4301 West Markham Street, Slot 531, Little Rock, AR, 72205, USA.
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Tseng CC, Gao J, Barinsky GL, Grube JG, Fang CH, Eloy JA, Hsueh WD. Inpatient Sinus Surgery Patient Morbidity and Outcomes: A National Analysis. Laryngoscope 2021; 132:1523-1529. [PMID: 34581441 DOI: 10.1002/lary.29881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/25/2021] [Accepted: 09/13/2021] [Indexed: 11/11/2022]
Abstract
OBJECTIVES/HYPOTHESIS To investigate the morbidity and mortality of patients undergoing endoscopic sinus surgery (ESS) in the inpatient setting. STUDY DESIGN Retrospective database review. METHODS The Nationwide Inpatient Sample was queried for all ESS between 2008 and 2014. Using All Patients Refined Diagnosis Related Groups (APR-DRG) codes, cases with APR-DRG codes under Major Diagnostic Category 3 (Diseases and Disorders of the Ear, Nose, Mouth, and Throat) were designated as patients with primary otolaryngology diagnoses undergoing ESS (ORL), and all other codes were designated as patients with non-otolaryngology pathologies as their primary reason for admission but undergoing ESS (non-ORL). A univariate analysis and a logistic regression were used to compare patient demographics, comorbidities, disease severity, and mortality. RESULTS There were 8,305 ORL patients and 6,342 non-ORL patients. ORL patients were more likely to be elective admissions (61.3% vs. 48.5%, P < .001), have a deviated nasal septum (17.9% vs. 12.3%, P < .001), nasal polyps (15.8% vs. 5.0%, P < .001), obstructive sleep apnea (10.7% vs. 5.2%, P < .001), and pulmonary disease (15.9% vs. 10.5%, P < .001). Non-ORL patients had a higher likelihood of in-hospital mortality (odds ratio [OR] 6.22, 95% confidence interval [CI] 3.29-11.78, P < .001), length of stay in the highest quartile (OR 2.43, 95% CI 2.16-2.74, P < .001), and a higher proportion had APR-DRG subclasses indicating extreme severity of illness (19.3% vs. 4.3%, P < .001) or extreme risk of mortality (12.5% vs. 2.0%, P < .001). CONCLUSION Patients undergoing ESS in the inpatient setting have a higher than expected mortality rate which can be associated with a non-otolaryngology pathology as the primary reason for their admission. LEVEL OF EVIDENCE 4 Laryngoscope, 2021.
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Affiliation(s)
- Christopher C Tseng
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A
| | - Jeff Gao
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A
| | - Gregory L Barinsky
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A
| | - Jordon G Grube
- Department of Otolaryngology, Albany Medical Center, Albany, New York, U.S.A
| | - Christina H Fang
- Department of Otorhinolaryngology-Head and Neck Surgery, Montefiore Medical Center, The University Hospital of Albert Einstein College of Medicine, Bronx, New York, U.S.A
| | - Jean A Eloy
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.,Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.,Department of Neurological Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.,Department of Ophthalmology and Visual Science, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.,Department of Otolaryngology and Facial Plastic Surgery, Saint Barnabas Medical Center, RWJBarnabas Health, Livingston, New Jersey, U.S.A
| | - Wayne D Hsueh
- Department of Otolaryngology-Head and Neck Surgery, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A.,Center for Skull Base and Pituitary Surgery, Neurological Institute of New Jersey, Rutgers New Jersey Medical School, Newark, New Jersey, U.S.A
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Vehling M, Canal C, Ziegenhain F, Pape HC, Neuhaus V. Short-term outcome of isolated lateral malleolar fracture treatment is independent of hospital trauma volume or teaching status: a nationwide retrospective cohort study. Eur J Trauma Emerg Surg 2021; 48:2237-2246. [PMID: 34398247 PMCID: PMC9192439 DOI: 10.1007/s00068-021-01771-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 08/09/2021] [Indexed: 11/20/2022]
Abstract
Introduction In light of current discussions about centralisation and teaching in medicine, we wanted to investigate the differences in in-hospital outcomes after surgical treatment of isolated ankle fractures, taking into account high-volume centres (HVCs) and low-volume centres (LVCs) and teaching procedures. Methods A retrospective analysis of malleolar fractures recorded in a National Quality Assurance Database (AQC) from the period 01-01-1998 to 31-12-2018 was carried out. Inclusion criteria were isolated, and operatively treated lateral malleolar fractures (ICD-10 Code S82.6 and corresponding procedure codes). Variables were sought in bivariate and multivariate analyses. A total of 6760 cases were included. By dividing the total cases arbitrarily in half, 12 HVCs (n = 3327, 49%) and 56 LVCs (n = 3433, 51%) were identified. Results Patients in HVCs were younger (48 vs. 50 years old), had more comorbidities (26% vs. 19%) and had more open fractures (0.48% vs. 0.15%). Open reduction and internal fixation was the most common operative treatment at HVCs and LVCs (95% vs. 98%). A more frequent use of external fixation (2.5% vs. 0.55%) was reported at HVCs. There was no difference in mortality between treatment at HVCs and LVCs. A longer hospitalisation of 7.2 ± 5 days at HVCs vs. 6.3 ± 4.8 days at LVCs was observed. In addition, a higher rate of complications of 3.2% was found at HVCs compared to 1.9% at LVCs. The frequency of teaching operations was significantly higher at HVCs (30% vs. 26%). Teaching status had no influence on mortality or complications but was associated with a prolonged length of stay and operating time. Conclusion We found significant differences between HVCs and LVCs in terms of in-hospital outcomes for ankle fractures. These differences could be explained due to a more severely ill patient population and more complex (also open) fracture patterns with resulting use of external fixation and longer duration of surgery. However, structural and organisational differences, such as an extended preoperative stays at HVCs and a higher teaching rate, were also apparent. No difference in mortality could be detected.
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Affiliation(s)
- Malte Vehling
- Division of Trauma Surgery, Department of Traumatology, University Hospital Zurich, University of Zurich, Raemistrasse 100, CH-8091, Zurich, Switzerland
| | - Claudio Canal
- Division of Trauma Surgery, Department of Traumatology, University Hospital Zurich, University of Zurich, Raemistrasse 100, CH-8091, Zurich, Switzerland
| | - Franziska Ziegenhain
- Division of Trauma Surgery, Department of Traumatology, University Hospital Zurich, University of Zurich, Raemistrasse 100, CH-8091, Zurich, Switzerland
| | - Hans-Christoph Pape
- Division of Trauma Surgery, Department of Traumatology, University Hospital Zurich, University of Zurich, Raemistrasse 100, CH-8091, Zurich, Switzerland
| | - Valentin Neuhaus
- Division of Trauma Surgery, Department of Traumatology, University Hospital Zurich, University of Zurich, Raemistrasse 100, CH-8091, Zurich, Switzerland.
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Revision knee arthroplasty: Can good outcomes be achieved at lower volumes? Knee 2021; 30:63-69. [PMID: 33873087 DOI: 10.1016/j.knee.2021.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 02/05/2021] [Accepted: 03/18/2021] [Indexed: 02/02/2023]
Abstract
BACKGROUND The National Joint Registry (NJR) demonstrates a re-revision rate for primary knee arthroplasty of 14.2% at 7 years. The 2015 Getting it Right First Time (GIRFT) report highlighted that 58% of surgeons undertaking revision knee arthroplasty (RKA) performed fewer than five cases per year. It has been suggested that revision cases be centralised in specialist centres with a multidisciplinary team (MDT) approach. Such a hub and spoke or cluster models may still require revision surgery to be performed at relatively low volume units. METHODS An analysis of RKA surgery performed in a four surgeon, lower volume revision knee unit over 10 years to December 2016 was undertaken. The effect of the introduction of a MDT was reviewed. The minimum follow up was two years. The primary outcome measure was re-revision. Hospital data as well as individual surgeon NJR reports were used to ensure all re-revisions were accounted for. Outcome scores were available for 68% of cases. RESULTS There were 192 RKAs performed in 187 patients at a mean (stdev) of 6.3 (5.4) years from the index procedure. The mean age at surgery was 68.2 (10.9) years. Twenty nine (15.5%) patients had died at the time of final review. Twelve (6.3%) cases required a further revision procedure. The commonest complication was stiffness requiring MUA. The overall 7 year survivorship was 94.9% (95% CI 90.2-97.3). The mean Oxford score at 5.4 years was 30.4 (10.4). CONCLUSIONS RKA can be reliably performed at lower volume centres with appropriate MDT systems in place.
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Aae TF, Jakobsen RB, Bukholm IRK, Fenstad AM, Furnes O, Randsborg PH. Compensation claims after hip arthroplasty surgery in Norway 2008-2018. Acta Orthop 2021; 92:311-315. [PMID: 33459568 PMCID: PMC8231378 DOI: 10.1080/17453674.2021.1872901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Background and purpose - Orthopedic surgery is one of the specialties with most compensation claims, therefore we assessed the most common reasons for complaints following total hip arthroplasty (THA) reported to the Norwegian System of Patient Injury Compensation (NPE) and viewed these complaints in light of the data from the Norwegian Arthroplasty Register (NAR).Patients and methods - We collected data from NPE and NAR for the study period (2008-2018), including age, sex, and type of complaint, and reason for accepted claims from NPE, and the number of arthroplasty surgeries from NAR. The institutions were grouped by quartiles into quarters according to annual procedure volume, and the effect of hospital procedure volume on the risk for accepted claim was estimated.Results - 70,327 THAs were reported to NAR. NPE handled 1,350 claims, corresponding to 1.9% of all reported THAs. 595 (44%) claims were accepted, representing 0.8% of all THAs. Hospital-acquired infection was the most common reason for accepted claims (34%), followed by wrong implant position in 11% of patients. Low annual volume institutions (less than 93 THAs per year) had a statistically significant 1.6 times higher proportion of accepted claims compared with higher volume institutions.Interpretation - The 0.8% risk of accepted claims following THAs is 1.6 times higher for patients treated in low-volume institutions, which should consider increasing the volume of THAs or referring these patients to higher volume institutions.
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Affiliation(s)
- Tommy Frøseth Aae
- Department of Orthopaedic Surgery, Health Møre and Romsdal HF, Kristiansund Hospital, Kristiansund
| | - Rune Bruhn Jakobsen
- Department of Orthopaedic Surgery, Akershus University Hospital, Lørenskog
- Department of Health Management and Health Economics, Institute of Health and Society, The Medical Faculty, University of Oslo
| | | | - Anne Marie Fenstad
- The Norwegian Arthroplasty Register, Department of Orthopaedic Surgery, Haukeland University Hospital, Bergen
| | - Ove Furnes
- The Norwegian Arthroplasty Register, Department of Orthopaedic Surgery, Haukeland University Hospital, Bergen
- Department of Clinical Medicine, Faculty of Medicine, University of Bergen, Bergen, Norway
| | - Per-Henrik Randsborg
- Department of Orthopaedic Surgery, Akershus University Hospital, Lørenskog
- Sports Medicine Institute, Hospital for Special Surgery, New York, USA
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Shah AA, Devana SK, Lee C, Kianian R, van der Schaar M, SooHoo NF. Development of a Novel, Potentially Universal Machine Learning Algorithm for Prediction of Complications After Total Hip Arthroplasty. J Arthroplasty 2021; 36:1655-1662.e1. [PMID: 33478891 PMCID: PMC10371358 DOI: 10.1016/j.arth.2020.12.040] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 11/19/2020] [Accepted: 12/22/2020] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND As the prevalence of hip osteoarthritis increases, the number of total hip arthroplasty (THA) procedures performed is also projected to increase. Accurately risk-stratifying patients who undergo THA would be of great utility, given the significant cost and morbidity associated with developing perioperative complications. We aim to develop a novel machine learning (ML)-based ensemble algorithm for the prediction of major complications after THA, as well as compare its performance against standard benchmark ML methods. METHODS This is a retrospective cohort study of 89,986 adults who underwent primary THA at any California-licensed hospital between 2015 and 2017. The primary outcome was major complications (eg infection, venous thromboembolism, cardiac complication, pulmonary complication). We developed a model predicting complication risk using AutoPrognosis, an automated ML framework that configures the optimally performing ensemble of ML-based prognostic models. We compared our model with logistic regression and standard benchmark ML models, assessing discrimination and calibration. RESULTS There were 545 patients who had major complications (0.61%). Our novel algorithm was well-calibrated and improved risk prediction compared to logistic regression, as well as outperformed the other four standard benchmark ML algorithms. The variables most important for AutoPrognosis (eg malnutrition, dementia, cancer) differ from those that are most important for logistic regression (eg chronic atherosclerosis, renal failure, chronic obstructive pulmonary disease). CONCLUSION We report a novel ensemble ML algorithm for the prediction of major complications after THA. It demonstrates superior risk prediction compared to logistic regression and other standard ML benchmark algorithms. By providing accurate prognostic information, this algorithm may facilitate more informed preoperative shared decision-making.
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Affiliation(s)
- Akash A Shah
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Sai K Devana
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Changhee Lee
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA
| | - Reza Kianian
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
| | - Mihaela van der Schaar
- Department of Electrical and Computer Engineering, University of California, Los Angeles, CA; Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, United Kingdom
| | - Nelson F SooHoo
- Department of Orthopaedic Surgery, David Geffen School of Medicine at UCLA, Los Angeles, CA
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Paderno E, Zanon V, Vezzani G, Giacon TA, Bernasek TL, Camporesi EM, Bosco G. Evidence-Supported HBO Therapy in Femoral Head Necrosis: A Systematic Review and Meta-Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18062888. [PMID: 33808951 PMCID: PMC7999152 DOI: 10.3390/ijerph18062888] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 03/08/2021] [Accepted: 03/10/2021] [Indexed: 12/19/2022]
Abstract
Although many studies have shown that hyperbaric oxygen (HBO) therapy can significantly improve symptoms and quality of life of patients affected by femoral head necrosis, this therapy is not worldwide approved yet. This meta-analysis was performed to evaluate its clinical effect. Relevant studies published before May 2020 were systematically searched using terms related to HBO and femoral head necrosis. Fixed and random-effects models were used to estimate the odds ratio (OR) with 95% confidence intervals (CI). Subgroup analyses and publication bias tests were carried out to explore potential study heterogeneity and bias. Ten studies involving 353 controls and 368 HBO-treated cases were included, most of which were conducted on Asian population. The clinical effect in the HBO therapy group was 3.84 times higher than in the control group (OR = 3.84, 95% CI (2.10, 7.02), p < 0.00001). Subgroup analyses showed that the clinical effect of HBO therapy was statistically significant in the Asian subpopulation which represented most of the subjects (OR = 3.53, 95% CI (1.87, 6.64), p < 0.00001), but not in the non-Asian subpopulation, probably because of insufficient numerosity (OR = 7.41, 95% CI (0.73, 75.71), p = 0.09). The results of this meta-analysis suggest that patients with femoral head necrosis treated with HBO therapy can achieve a significant clinical improvement.
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Affiliation(s)
- Emma Paderno
- Environmental and Respiratory Physiology Lab and II Level Master in Diving and Hyperbaric Medicine, Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy; (E.P.); (G.V.); (G.B.)
- DHMU at ICCB, Istituti Ospedalieri Bresciani, GSD—University and Research Hospitals, 25128 Brescia, Italy
| | - Vincenzo Zanon
- Environmental and Respiratory Physiology Lab and II Level Master in Diving and Hyperbaric Medicine, Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy; (E.P.); (G.V.); (G.B.)
- DHMU at ICCB, Istituti Ospedalieri Bresciani, GSD—University and Research Hospitals, 25128 Brescia, Italy
- Correspondence: (V.Z.); (T.A.G.)
| | - Giuliano Vezzani
- Environmental and Respiratory Physiology Lab and II Level Master in Diving and Hyperbaric Medicine, Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy; (E.P.); (G.V.); (G.B.)
| | - Tommaso Antonio Giacon
- Environmental and Respiratory Physiology Lab and II Level Master in Diving and Hyperbaric Medicine, Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy; (E.P.); (G.V.); (G.B.)
- Correspondence: (V.Z.); (T.A.G.)
| | - Thomas L. Bernasek
- Adult Reconstruction, Florida Orthopaedic Institute, Tampa, FL 33625, USA;
| | | | - Gerardo Bosco
- Environmental and Respiratory Physiology Lab and II Level Master in Diving and Hyperbaric Medicine, Department of Biomedical Sciences, University of Padova, 35122 Padova, Italy; (E.P.); (G.V.); (G.B.)
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Kretzer JP, Uhler M, Jäger S, Bormann T, Sonntag R, Schonhoff M, Schröder S. [Tribology in hip arthroplasty : Benefits of different materials]. DER ORTHOPADE 2021; 50:259-269. [PMID: 33630110 DOI: 10.1007/s00132-021-04077-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/01/2021] [Indexed: 11/30/2022]
Abstract
When it comes to total hip replacements, choosing the suitable material combination is of clinical relevance. The present review article examines the technical differences in wear and corrosion of the relevant material combinations of ceramics, metals, ceramized metals and various types of polyethylene. The material characteristics, which were often tested under standardized conditions in the laboratory, are compared with clinical results on the basis of evidence-graded clinical studies and on the basis of register studies. This article thus represents an up-to-date snapshot of the expectations and actual clinical outcomes of the present choice of material combinations. It shows that some tendencies from the field of materials research, e.g. with regard to cross-linked polyethylene, coincide with observations from practical clinical experience, while for other materials, a proven technical superiority has not yet been confirmed as an evident advantage in clinical practice.
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Affiliation(s)
- J Philippe Kretzer
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland.
| | - Maximilian Uhler
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | - Sebastian Jäger
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | - Therese Bormann
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | - Robert Sonntag
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | - Mareike Schonhoff
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
| | - Stefan Schröder
- Klinik für Orthopädie und Unfallchirurgie, Labor für Biomechanik und Implantatforschung, Universitätsklinikum Heidelberg, Schlierbacher Landstraße 200a, 69118, Heidelberg, Deutschland
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Sherman WF. Letter to the Editor, "Who Restores Hip Biomechanics More Effectively After a Femoral Neck Fracture? Comparison of Total Hip Arthroplasties Performed by Either Hip Surgeons or Orthopedic Residents". Arthroplast Today 2021; 7:135. [PMID: 33553539 PMCID: PMC7850933 DOI: 10.1016/j.artd.2020.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 12/12/2020] [Indexed: 11/16/2022] Open
Affiliation(s)
- William F Sherman
- Department of Orthopaedic Surgery, Tulane University, New Orleans, LA, USA
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Arenchild M, Offodile AC, Revere L. Do We Get What We Pay For? Examining the Relationship Between Payments and Clinical Outcomes in High-Volume Elective Surgery in a Commercially-Insured Population. INQUIRY: The Journal of Health Care Organization, Provision, and Financing 2020; 57:46958020968780. [PMID: 33138676 PMCID: PMC7675868 DOI: 10.1177/0046958020968780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Studies evaluating the cost and quality of healthcare services have produced
inconsistent results. We seek to determine if higher paid hospitals have higher
quality outcomes compared to those receiving lower payments, after accounting
for clinical and market level factors. Using inpatient commercial claims from
the IBM® MarketScan® Research Databases, we used an
ordinal logistic regression to analyze the association between hospital median
payments for elective hip and knee procedures and 3 quality outcomes: prolonged
length of stay, complication rate, and 30-day readmission rate. Patient-level
and market factor covariates were appropriately adjusted. Hospital-level
payments were found to be not significantly correlated with hospital quality of
care. This research suggests that higher payments cannot predict higher quality
outcomes. This finding has implications for provider-payer negotiations,
value-based insurance designs, strategies to increase high-value care provision,
and consumer choices in an increasingly consumer-oriented healthcare
landscape.
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Affiliation(s)
| | - Anaeze C Offodile
- The University of Texas a MD Anderson Cancer Center, Houston, TX, USA
| | - Lee Revere
- The University of Texas Health Science Center, Houston, TX, USA
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Ezomo OT, Sun D, Gronbeck C, Harrington MA, Halawi MJ. Where Do We Stand Today on Racial and Ethnic Health Disparities? An Analysis of Primary Total Hip Arthroplasty From a 2011-2017 National Database. Arthroplast Today 2020; 6:872-876. [PMID: 33163602 PMCID: PMC7609456 DOI: 10.1016/j.artd.2020.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 09/11/2020] [Accepted: 10/04/2020] [Indexed: 12/20/2022] Open
Abstract
Background Little is known about the persistence of health disparities in joint arthroplasty. The objective of this study was to update our knowledge on the state of racial and ethnic disparities in total hip arthroplasty (THA). Methods Patients undergoing primary, elective THA using the 2011-2017 American College of Surgeons National Surgical Quality Improvement Program were retrospectively reviewed. Five minority groups (non-Hispanic black or African American, Hispanic or Latino, Asian, American Indian or Alaska Native, and Native Hawaiian or Pacific Islander) were compared with non-Hispanic whites. The primary outcomes were in the differences in demographic characteristics, comorbidities, perioperative characteristics, THA utilization, length of stay (LOS), and 30-day adverse events (mortality, readmission, reoperation, and complications). Results A total of 155,870 patients were identified with racial and ethnic data available on 134,961 (86.6%) of them. Non-Hispanic white patients comprised 74.5% of all THA procedures. Except for Asians, all minority groups were more likely to be younger, have a higher body mass index, and smoke tobacco (P < .001). There were higher rates of nonprimary osteoarthritis, procedure length exceeding 100 minutes, and comorbidities among all minority groups. All minority groups, except Asian and Hawaiians or Pacific Islanders, were more likely to require an LOS >2 days. Blacks were more likely to develop surgical or medical complications (odds ratio [OR]: 1.21 and 1.2, respectively), whereas Hispanics or Latinos were more likely to develop surgical complications (OR: 1.28). American Indians or Alaska Natives were more likely to undergo reoperations (OR: 1.91). Conclusions Health disparities persist among minority groups with respect to comorbidities, THA utilization, LOS, and complications. Blacks and Hispanics or Latinos appear to be the most impacted by these disparities.
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Affiliation(s)
- Olohirere T Ezomo
- The Frank H. Netter M.D. School of Medicine at Quinnipiac University, North Haven, CT, USA
| | - Daniel Sun
- Department of Orthopaedic Surgery, Baylor College of Medicine, Houston, TX, USA
| | | | - Melvyn A Harrington
- Department of Orthopaedic Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Mohamad J Halawi
- Department of Orthopaedic Surgery, Baylor College of Medicine, Houston, TX, USA
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Steinbrück A, Grimberg A, Melsheimer O, Jansson V. [Influence of institutional experience on results in hip and knee total arthroplasty : An analysis from the German arthroplasty registry (EPRD)]. DER ORTHOPADE 2020; 49:808-814. [PMID: 32885289 DOI: 10.1007/s00132-020-03963-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The German Arthroplasty Registry, EPRD, has the ability to examine early factors influencing the probability of failure of total hip arthroplasty (THA) and knee arthroplasty (TKA). The study analyses the influence of the overall experience of a hospital, as well as the change in supplier on the revision rate. MATERIALS AND METHODS A total of 164,903 cementless THA and 155,577 cemented TKA were in follow-up from 656 hospitals from 2012 to 2019. The number of arthroplasties performed per hospital per year was used as a surrogate parameter for institutional experience. This number was subdivided into 250, 251-500 and more than 500 for hip and knee per year and the overall revision rate was analysed. Additionally, the effects of the change of a major supplier of implant systems to a hospital were analysed. At least 70% of the documented implant components for each calendar quarter were used in that hospital to define the company as a major supplier. RESULTS The overall revision rate for THA was 3.9% for hospitals with up to 250 arthroplasties per year, 3.3% for hospitals with 251-500 arthroplasties per year and 2.9% for hospitals performing over 500 surgeries per year (p < 0.0001). The revision rate for TKA was also significantly different between the three groups with 3.4, 3.3 and 2.7% (p < 0.0001). Changing the supplier of implant systems also showed a significant increase of the revision rate (p < 0.0001 for THA, p = 0.02 for TKA). CONCLUSION The institutional experience significantly influences short-term results in terms of the revision rate of hip and knee arthroplasty. Changing the implant system even in an experienced hospital has a major impact on the early revision rate and, therefore, needs careful transition.
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Affiliation(s)
- Arnd Steinbrück
- Endoprothesenregister Deutschland (EPRD gGmbH), Berlin, Deutschland. .,Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Klinikum der Universität München, LMU München, München, Deutschland. .,Orthopädisch-Chirurgisches Kompetenzzentrum Augsburg (OCKA), Augsburg, Deutschland.
| | - Alexander Grimberg
- Endoprothesenregister Deutschland (EPRD gGmbH), Berlin, Deutschland.,Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Klinikum der Universität München, LMU München, München, Deutschland
| | | | - Volkmar Jansson
- Endoprothesenregister Deutschland (EPRD gGmbH), Berlin, Deutschland.,Klinik und Poliklinik für Orthopädie, Physikalische Medizin und Rehabilitation, Klinikum der Universität München, LMU München, München, Deutschland
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Hachadorian ME, Mitchell BC, Siow MY, Wang W, Bastrom T, Sullivan TB, Huang BK, Edmonds EW, Kent WT. Identifying the axillary nerve during shoulder surgery: an anatomic study using advanced imaging. JSES Int 2020; 4:987-991. [PMID: 33345245 PMCID: PMC7738427 DOI: 10.1016/j.jseint.2020.06.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Background The axillary nerve (AXN) is one of the more commonly injured nerves during shoulder surgery. Prior anatomic studies of the AXN in adults were performed using cadaveric specimens with small sample sizes. Our research observes a larger cohort of magnetic resonance imaging (MRI) studies in order to gain a more representative sample of the course of the AXN and aid surgeons intraoperatively. Methods High-resolution 3T MRI studies performed at our institution from January 2010 to June 2019 were reviewed. Four blinded reviewers with musculoskeletal radiology or orthopedic surgery training measured the distance of the AXN to the surgical neck of the humerus (SNH), the lateral tip of the acromion (LTA), and the inferior glenoid rim (IGR). Intraclass correlation coefficient was calculated to assess reliability between reviewers. The nerve location was assessed relative to rotator cuff tear status. Results A total of 257 shoulder MRIs were included. Intraclass correlation coefficient was excellent at 0.80 for the SNH, 0.90 for the LTA, and 0.94 for the IGR. All intraobserver reliabilities were above 0.80. The mean distance from the AXN to SNH was 1.7 cm (range, 0.7-3.1 cm; interquartile range, 1.38-2.00) and that from the AXN to IGR was 1.6 cm (range, 0.6-2.6 cm; interquartile range, 1.33-1.88). The mean AXN to LTA distance was 7.1 cm, with a range of 5.2-9.0 cm across patient heights; there was a large effect size related to the LTA to AXN distance and patient height with a correlation of r = 0.603 (P < .001). Rotator cuff pathology appears to affect nerve location by increasing the distance between the AXN and SNH (P = .027). Discussion/Conclusion The AXN is vulnerable to injury during both open and arthroscopic shoulder procedures. This injury can be either a result of direct trauma to the nerve or secondary to traction placed on the nerve with reconstructive procedures that distalize the humerus. Our study demonstrates that the AXN can be found as little as 5.6 mm from the IGR and 6.9 mm from the SNH. In addition, we illustrate the relationship between patient height and the LTA to AXN distance and complete rotator cuff tears and the SNH to AXN distance. Our study is the first to demonstrate the nerve's proximity to important surgical landmarks of the shoulder using a large sample size of high-resolution images in living human shoulders.
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Affiliation(s)
- Michael E Hachadorian
- Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA, USA
| | - Brendon C Mitchell
- Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA, USA
| | - Matthew Y Siow
- Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA, USA
| | - Wilbur Wang
- Department of Musculoskeletal Radiology, University of California San Diego, San Diego, CA, USA
| | - Tracey Bastrom
- Department of Orthopaedic Surgery, Rady Children's Hospital, San Diego, CA, USA
| | - T Barrett Sullivan
- Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA, USA
| | - Brady K Huang
- Department of Musculoskeletal Radiology, University of California San Diego, San Diego, CA, USA
| | - Eric W Edmonds
- Department of Orthopaedic Surgery, Rady Children's Hospital, San Diego, CA, USA
| | - William T Kent
- Department of Orthopaedic Surgery, University of California San Diego, San Diego, CA, USA
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