1
|
Rolvien T, Thiessen ML, Boese CK, Bechler U, Strahl A, Beil FT, Ries C. Areal bone mineral density is not associated with femoral stem subsidence in patients younger than 70 years undergoing total hip arthroplasty. Arch Orthop Trauma Surg 2024; 144:1415-1422. [PMID: 38062273 PMCID: PMC10896811 DOI: 10.1007/s00402-023-05137-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 11/11/2023] [Indexed: 02/28/2024]
Abstract
INTRODUCTION Femoral stem subsidence is a known complication after uncemented total hip arthroplasty (THA). The purpose of this study was to determine the frequency of osteoporosis and to investigate the relationship between areal bone mineral density (aBMD) and subsidence in a cohort of patients younger than 70 years. METHODS One hundred consecutive patients (age 60 ± 6 years; 52 female, 48 male) undergoing uncemented THA using a collarless press fit femoral stem were retrospectively reviewed. Dual-energy X-ray absorptiometry (DXA) was performed preoperatively at the proximal femur and lumbar spine, and if not feasible at these sites, at the distal radius. DXA results were compared to a cohort of 100 patients ≥ 70 years scheduled for cemented THA. Age, sex, and body mass index (BMI), canal flare index (CFI), and canal fill ratio (CFR) were assessed. Analysis of stem subsidence and migration was performed on standardized, calibrated radiographs obtained postoperatively and at follow-up. RESULTS The frequency of osteoporosis was considerably lower in the study cohort compared to patients ≥ 70 years (7% vs. 19%, p = 0.02). Illustrated by the high CFR (mean 96 ± 4%) in the mid-stem region, a sufficient press fit was achieved. After a mean follow-up of 7.4 months, the mean stem subsidence was 0.9 ± 0.9 mm. Only two patients had subsidence greater than 3 mm, one of whom was morbidly obese and the other diagnosed with severe osteoporosis. There were no correlations between any of the parameters (CFI, CFR, age, sex, BMI) and femoral stem subsidence. In addition, aBMD T-scores showed no correlations with subsidence. CONCLUSION aBMD by DXA does not appear to be associated with stem subsidence in patients younger than 70 years and with adequate press fit.
Collapse
Affiliation(s)
- Tim Rolvien
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
| | - Maximilian Lenard Thiessen
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Christoph Kolja Boese
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Ulrich Bechler
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - André Strahl
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Frank Timo Beil
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany
| | - Christian Ries
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Germany.
| |
Collapse
|
2
|
Strahl A, Bücker L, Bechler U, Krüger L, Ries C, Hubert J, Beil FT, Rolvien T. Influence of health literacy on health-related quality of life after total hip arthroplasty. Arch Orthop Trauma Surg 2024; 144:1389-1400. [PMID: 37882818 PMCID: PMC10896873 DOI: 10.1007/s00402-023-05098-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 09/30/2023] [Indexed: 10/27/2023]
Abstract
INTRODUCTION Personal knowledge about the own disease, a key component of health literacy (HL), may have a considerable impact on treatment outcomes. The purpose of this study was to investigate whether the patients' knowledge about the surgical procedure, risks, and aftercare, as well as the satisfaction with the preoperative level of information, has an influence on the health-related quality of life (HRQoL) after primary total hip arthroplasty (THA). MATERIALS AND METHODS A total of 176 patients (68.3 ± 10.3 years, 60.8% female) were evaluated. HRQoL was assessed prior to surgery as well as one and twelve months after THA using the 12-item Short Form Questionnaire. Following standardized surgical informed consent, HL was assessed preoperatively using a self-constructed quiz score, while information satisfaction was measured with a single-item rating scale. Sociodemographic and clinical characteristics, including pain (VAS), functionality (WOMAC), and psychological distress (PHQ-4), were also assessed at baseline. Multiple linear regression analyses were performed to examine whether HL, satisfaction with information, age, social class, WOMAC, VAS, and PHQ-4 predict HRQoL at one and twelve months post-surgery. RESULTS The average HL quiz score was 23 ± 5.1 out of a possible 33 points. Social class index significantly influenced HL (p < 0.001). A weak correlation between HL and age (r = 0.23, p = 0.01) and no correlation between HL and psychological distress (p = 0.868) were observed. One month after THA, physical HRQoL was significantly predicted by the WOMAC index (p = 0.031) and subjective satisfaction with information (p = 0.022), but not by HL. After twelve months, only the WOMAC was a significant predictor (p < 0.001) of physical HRQoL. CONCLUSION Although subjective satisfaction with the patient's preoperative level of information had a significant effect on the physical HRQoL at one month after THA, the influence of osteoarthritis severity outweighed this effect after twelve months. HL had no direct influence on HRQoL. These results suggest that patient satisfaction, rather than knowledge, predicts HRQoL.
Collapse
Affiliation(s)
- André Strahl
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
| | - Lara Bücker
- Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Ulrich Bechler
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Lara Krüger
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Christian Ries
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Jan Hubert
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Frank Timo Beil
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Tim Rolvien
- Division of Orthopaedics, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
| |
Collapse
|
3
|
Jungwirth-Weinberger A, List K, Bechler U, Hanreich C, Rueckl S, Boettner F. Patella component diameters of 38 mm and up might be associated with higher revision rates after patella resurfacing. J Orthop Surg Res 2023; 18:325. [PMID: 37106469 PMCID: PMC10141901 DOI: 10.1186/s13018-023-03705-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 03/13/2023] [Indexed: 04/29/2023] Open
Abstract
PURPOSE Patellar resurfacing is considered the standard of care for total knee arthroplasty in the USA. Complications of patella resurfacing include aseptic loosening or patella fractures and can threaten the integrity of the extensor mechanism. The goal of this study was to report on patella button revision rates in posterior stabilized total knee arthroplasty. MATERIAL AND METHODS Between 01/2010 and 08/2016 patella buttons were implanted in 1056 patients (267 men and 550 women) as part of a posterior stabilized total knee arthroplasty. RESULTS Of 1056 cases, 35 cases (14 women, 15 men, 5 bilateral, 3.3%) showed early loosening at a mean 52.5 months postoperatively. Patella components of 38 mm or larger diameters showed a significantly higher loosening rate than the 29, 32, 35 mm buttons (p < 0.01). Mean BMI of patients identified with aseptic loosening was 31.7 kg/m2, mean age at time of revision surgery was 63.3 years. All of the patients with loosening of the patella button required revision surgery; in 33 cases an exchange of the button was performed, in two cases a removal of the button and patellar bone grafting was indicated. No complications occurred after revision surgery. CONCLUSION The current study reports a 3.3% patella loosening rate during this mid-term follow-up. Size 38 mm and larger patella components showed a significantly higher revision rate than smaller buttons and the authors advise caution when using large diameter patella components.
Collapse
Affiliation(s)
| | - Kilian List
- Hospital for Special Surgery, New York, USA
- Orthopädische Klinik König-Ludwig-Haus, Würzburg, Germany
| | - Ulrich Bechler
- Hospital for Special Surgery, New York, USA
- Universitätsklinik Hamburg-Eppendorf, Hamburg, Germany
| | - Carola Hanreich
- Hospital for Special Surgery, New York, USA
- Inselspital, Bern, Switzerland
| | | | | |
Collapse
|
4
|
Lass R, Bechler U, Springer B, Rueckl K, Hanreich C, Boettner F. Midterm results of the Birmingham hip resurfacing: a single-surgeon series. Arch Orthop Trauma Surg 2023; 143:1041-1048. [PMID: 35076766 DOI: 10.1007/s00402-021-04305-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 12/04/2021] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Birmingham hip resurfacing (BHR) is readily used as alternative to total hip replacement in younger patients. The current study aims to compare outcomes in terms of adverse local tissue reactions (ALTR), elevated metal ion levels and survival rates between low-risk (femoral component size ≥ 48 mm) and high-risk (femoral component size < 48 mm) BHR patients at a minimum 5-year follow-up (FU). MATERIALS AND METHODS We report the minimum 5-year, single surgeon outcome results of 183 BHRs, performed between 2007 and 2012. 154 patients, 18 women (20 hips) and 136 men (163 hips) were included in the study. Patients were grouped in 149 low-risk cases (femoral component size ≥ 48 mm) and in 34 high-risk cases (18 female/12 male) patients with a femoral head size < 48 mm). RESULTS At a minimum of 5-years FU time, 91% of the patients were available for FU. The overall survival rate was 91.8%. There were five revisions (survival rate 96.6%) in the low-risk group and ten revisions (survival rate 70.6%) in the high-risk group. In the low-risk group, six patients (6.5%) showed elevated metal ion levels (> 7 μg/l), compared to five patients (20.8%) in the high risk-group (p = 0.03). CONCLUSION Including the surgeon's initial learning curve, the BHR shows very good mid-term survival rates in the low-risk group but should, as previously demonstrated, not be considered for patients with less than 48 mm femoral head size. LEVEL OF EVIDENCE Level III: retrospective cohort study.
Collapse
Affiliation(s)
- Richard Lass
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA
- Department of Orthopedics and Traumatology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Ulrich Bechler
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Bernhard Springer
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA
- Department of Orthopedics and Traumatology, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Kilian Rueckl
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA
- Orthopedic Clinic König-Ludwig-Haus, University of Wuerzburg, Würzburg, Germany
| | - Carola Hanreich
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA
| | - Friedrich Boettner
- Hospital for Special Surgery, Adult Reconstruction and Joint Replacement, 535 East 70th Street, New York, NY, 10021, USA.
| |
Collapse
|
5
|
Rueckl K, Springer B, Jungwirth-Weinberger A, Bechler U, Kasparek MF, Boettner F. A standardized soft tissue release technique to lower the risk of greater trochanteric fractures for the anterior approach in total hip arthroplasty. Arch Orthop Trauma Surg 2022; 142:3067-3073. [PMID: 33954812 PMCID: PMC9522704 DOI: 10.1007/s00402-021-03919-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 04/19/2021] [Indexed: 11/16/2022]
Abstract
INTRODUCTION The direct anterior approach (DAA) is suggested to accelerate postoperative recovery and decrease the dislocation risk after primary total hip arthroplasty (THA). However, exposure of the femur can be challenging. Insufficient exposure increases the risk for intraoperative femoral fracture. MATERIALS AND METHODS Of 435 consecutive anterior THA, the first 102 consecutive THA in 94 patients were treated with an external rotator tendon "release-on-demand" (RoD). The following 311 consecutive patients (333 THA) underwent routine release of the conjoint tendon (CTR) of its bony insertion on the greater trochanter only. Retrospective analysis recorded trochanteric fractures, intraoperative calcar fractures, postoperative periprosthetic fractures, stem subsidence, ossifications, and dislocations. RESULTS Three (2.9%) fractures of the greater trochanter were recorded in the RoD group, but no (0.0%) fractures occurred in the CTR group (p = 0.002). There was no significant difference in the occurrence of intraoperative calcar fractures (0% (RoD) vs. 1.2% (CTR), p = 0.267), postoperative periprosthetic fractures (0% (RoD) vs. 0.3% (CTR), p = 0.560), stem subsidence (2.0% (RoD) vs. 1.2% (CTR), p = 0.565) or ossifications (2.9% (RoD) vs. 1.6% (CTR), p = 0.344) between these groups. There were no dislocations within a minimum 12 months follow-up period. CONCLUSION The routine release of the conjoined tendon (CTR group) decreases the shear forces on the tip of the greater trochanter during DAA THA and eliminates the risk of greater trochanter fractures. The routine release of the conjoined tendon did not increase the risk of postoperative dislocations.
Collapse
Affiliation(s)
- Kilian Rueckl
- Hospital for Special Surgery, New York, NY, 10021, USA.
- Department of Orthopaedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Brettreichstrasse 11, 97074, Wuerzburg, Germany.
| | | | | | | | - Maximillian F Kasparek
- Department of Orthopedics, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | | |
Collapse
|
6
|
Friedrich B, Bechler U, Springer B, Faschingbauer M, Jungwirth-Weinberger A. Erratum to ‘Impaction Bone Grafting in Revision Total Knee Arthroplasty-Using Mesh and Cone to Contain the Defect: A Report of 3 Cases’ [Arthroplasty Today 6 (2020) 578-584]. Arthroplast Today 2022; 15:225. [PMID: 35774883 PMCID: PMC9237285 DOI: 10.1016/j.artd.2022.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
7
|
von Kroge S, Stürznickel J, Bechler U, Stockhausen KE, Eissele J, Hubert J, Amling M, Beil FT, Busse B, Rolvien T. Impaired bone quality in the superolateral femoral neck occurs independent of hip geometry and bone mineral density. Acta Biomater 2022; 141:233-243. [PMID: 34999261 DOI: 10.1016/j.actbio.2022.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/30/2021] [Accepted: 01/03/2022] [Indexed: 11/01/2022]
Abstract
Skeletal adaptation is substantially influenced by mechanical loads. Osteocytes and their lacuno-canalicular network have been identified as a key player in load sensation and bone quality regulation. In the femoral neck, one of the most common fracture sites, a complex loading pattern with lower habitual loading in the superolateral neck and higher compressive stresses in the inferomedial neck is present. Variations in the femoral neck-shaft angle (NSA), i.e., coxa vara or coxa valga, provide the opportunity to examine the influence of loading patterns on bone quality. We obtained femoral neck specimens of 28 osteoarthritic human subjects with coxa vara, coxa norma and coxa valga during total hip arthroplasty. Bone mineral density (BMD) was assessed preoperatively by dual energy X-ray absorptiometry (DXA). Cortical and trabecular microstructure and three-dimensional osteocyte lacunar characteristics were assessed in the superolateral and inferomedial neck using ex vivo high resolution micro-computed tomography. Additionally, BMD distribution and osteocyte lacunar characteristics were analyzed by quantitative backscattered electron imaging (qBEI). All groups presented thicker inferomedial than superolateral cortices. Furthermore, the superolateral site exhibited a lower osteocyte lacunar density along with lower lacunar sphericity than the inferomedial site, independent of NSA. Importantly, BMD and corresponding T-scores correlated with microstructural parameters at the inferomedial but not superolateral neck. In conclusion, we provide micromorphological evidence for fracture vulnerability of the superolateral neck, which is independent of NSA and BMD. The presented bone qualitative data provide an explanation why DXA may be insufficient to predict a substantial proportion of femoral neck fractures. STATEMENT OF SIGNIFICANCE: The femoral neck, one of the most common fracture sites, is subject to a complex loading pattern. Site-specific differences (i.e., superolateral vs. inferomedial) in bone quality influence fracture risk, but it is unclear how this relates to hip geometry and bone mineral density (BMD) measurements in vivo. Here, we examine femoral neck specimens using a variety of high-resolution imaging techniques and demonstrate impaired bone quality in the superolateral compared to the inferomedial neck. Specifically, we found impaired cortical and trabecular microarchitecture, mineralization, and osteocyte properties, regardless of neck-shaft angle. Since BMD correlated with bone quality of the inferomedial but not the superolateral neck, our results illustrate why bone densitometry may not predict a substantial proportion of femoral neck fractures.
Collapse
|
8
|
Hanreich C, Springer B, Waldstein W, Rueckl K, Bechler U, Boettner F. Sport after Knee Replacement Surgery - a Review of Sport Habits and Key Surgical Aspects. Z Orthop Unfall 2022. [PMID: 35196740 DOI: 10.1055/a-1699-3403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
As an increasing number of younger patients are undergoing total knee replacement (TKR) surgery, many wish to participate in sport, but still expect that the implant will survive for a extended period. Most of the current literature shows that patients predominantly participate in low impact activities, both before and after surgery. A few studies show that with appropriate previous experience, high-impact sports are possible and might not result in increased implant failure rates. These include a decrease in point loads on the polyethylene by using more conform bearing surfaces, avoidance of varus component alignment to minimise stresses at the implant bone interface and avoiding patella resurfacing to facilitate activities in deep knee flexion.A TKR is no longer an absolute contraindication for higher impact activities such as golf, tennis and ski. What is more important than implant specific factors seem to be patient specific factors, including preoperative activity level, and preoperative sport skills.The current review paper reports on the current sport habits of TKR patients, analyses biomechanical loads on the knee during different sport activities and reports on implant selection and technical considerations for the active patient undergoing TKR.
Collapse
Affiliation(s)
- Carola Hanreich
- Department of Orthopedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, United States
| | - Bernhard Springer
- Department of Orthopedics and Trauma Surgery, General Hospital of the City of Vienna - Hospital of the Medical University of Vienna, Wien, Österreich
| | - Wenzel Waldstein
- Department of Orthopedics and Trauma Surgery, General Hospital of the City of Vienna - Hospital of the Medical University of Vienna, Wien, Österreich
| | - Kilian Rueckl
- Department of Orthopaedics, Orthopädische Klinik König-Ludwig-Haus, Würzburg, Deutschland
| | - Ulrich Bechler
- Department of Orthopedics, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Deutschland
| | - Friedrich Boettner
- Department of Orthopedic Surgery, Adult Reconstruction and Joint Replacement, Hospital for Special Surgery, New York, United States
| |
Collapse
|
9
|
Berger-Groch J, Jandl NM, Strahl A, Bechler U, Beil FT, Stuecker MH. Ultrasound as a diagnostic tool for femoral head containment disorders in children between one and 12 years of age. J Child Orthop 2021; 15:496-502. [PMID: 34858537 PMCID: PMC8582606 DOI: 10.1302/1863-2548.15.210092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 07/23/2021] [Indexed: 02/03/2023] Open
Abstract
PURPOSE Ultrasound has been used to diagnose hip dysplasia in neonates and to screen until the end of their first year. For older children, femoral head containment disorders such as developmental dysplasia of the hip, Legg-Calvé-Perthes disease or cerebral palsy are usually diagnosed with plain radiographs. The aim of the present study was to evaluate ultrasound in comparison with radiographic imaging in children up to age 12 years and to determine reference values for sonographic containment parameters. METHODS Hip ultrasound and radiographic imaging were acquired on the same day and then compared. As a reference, normal acetabular angle and acetabulum head index were determined on radiographs. Lateral cartilage distance (LCD), lateral head distance (LHD) and femoral head extrusion angle (HA) were measured on ultrasound images. RESULTS We included 96 patients with 167 healthy hips in the study. A total of 55 patients were female and 41 male. The mean age was 5.2 years (sd 3.3; 1.0 to 11.9). LCDultrasound, LHDultrasound and HAultrasound correlated significantly with radiographic parameters. The following ultrasound values were calculated as limits for impending loss of containment: LCDultrasound ≥ 6.5 mm, LHDultrasound ≥ 3.3 mm and HAultrasound ≥ 27.6°. CONCLUSION Ultrasound is a simple, radiation-free diagnostic tool to detect femoral head containment disorders, even in children older than one year. This study provides reference values for hip ultrasound in children up to 12 years. LEVEL OF EVIDENCE III.
Collapse
Affiliation(s)
- Josephine Berger-Groch
- Department of Trauma Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Paediatric Orthopaedic Surgery, Orthopaedic Hospital Bad Bramstedt, Bad Bramstedt, Germany.,Correspondence should be sent to Dr. Josephine Berger-Groch, Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Germany. E-mail:
| | - Nico Maximilian Jandl
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Paediatric Orthopaedic Surgery, Orthopaedic Hospital Bad Bramstedt, Bad Bramstedt, Germany
| | - Andre Strahl
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrich Bechler
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Paediatric Orthopaedic Surgery, Orthopaedic Hospital Bad Bramstedt, Bad Bramstedt, Germany
| | - Frank Timo Beil
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Paediatric Orthopaedic Surgery, Orthopaedic Hospital Bad Bramstedt, Bad Bramstedt, Germany
| | - Markus H.F. Stuecker
- Department of Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of Paediatric Orthopaedic Surgery, Orthopaedic Hospital Bad Bramstedt, Bad Bramstedt, Germany
| |
Collapse
|
10
|
Bechler U, Springer B, Rueckl K, Rolvien T, Boettner F. Can a simple iPad app improve C-arm based component position in anterior THA? Arch Orthop Trauma Surg 2021; 141:1401-1409. [PMID: 33582865 DOI: 10.1007/s00402-021-03807-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 01/25/2021] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Correct acetabular component positioning improves hip biomechanics, impingement free range of motion and may lead to a reduced risk of postoperative dislocation. The C-arm is a simple and cost-effective tool for THA in a supine position, however, evaluation of the images can be challenging due to parallax. The current study aimed to investigate whether a software app-based measurement technique can control acetabular component position and leg length in anterior THA. MATERIALS AND METHODS Ninety-three patients with end-stage osteoarthritis aged 65.2 ± 9.6 years (range 30-86 years) were included in this prospective study. All patients underwent direct anterior THA using a Hana orthopedic surgery table. C-arm imaging and an iPad software app were used to determine intraoperative acetabular anteversion, inclination and leg length discrepancy. The app provides a measuring tool that is applied to intraoperative c-arm images. The intraoperative measurements were compared to the measurements of standard postoperative AP-pelvis radiographs. RESULTS Intraoperative software app-based anteversion measurements averaged 20.5° (range 16.0° to 24.0°) compared to 20.9° (range 14.7° to 25.6°) postoperatively. Mean intraoperative inclination was 40.5° (range 35° to 48°) compared to postoperative 40.7° (range 35° to 49°). Mean intraoperative leg length discrepancy was 0.9 mm (range - 4-5 mm) compared to postoperative 0.6 mm (range - 5-6 mm). A strong Pearson's correlation was observed between the intraoperative and postoperative measurements for anteversion (r = .701; P < .0001), inclination (r = .816; P < .0001) and leg length discrepancy (r = .542; P < .0001). CONCLUSIONS The software app used in the current study allowed for a simple and accurate measurement of intraoperative cup position and leg length in direct anterior THA.
Collapse
Affiliation(s)
- Ulrich Bechler
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.,Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251, Hamburg, Germany
| | - Bernhard Springer
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Kilian Rueckl
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Tim Rolvien
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20251, Hamburg, Germany
| | - Friedrich Boettner
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| |
Collapse
|
11
|
Mühlenfeld M, Strahl A, Bechler U, Jandl NM, Hubert J, Rolvien T. Bone mineral density assessment by DXA in rheumatic patients with end-stage osteoarthritis undergoing total joint arthroplasty. BMC Musculoskelet Disord 2021; 22:173. [PMID: 33573628 PMCID: PMC7879515 DOI: 10.1186/s12891-021-04039-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/18/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Patients with rheumatic diseases have a high risk for joint destruction and secondary osteoarthritis (OA) as well as low bone mineral density (BMD, i.e., osteoporosis). While several factors may lead to low BMD in these patients, the value of BMD measurements in rheumatic patients with end-stage OA scheduled for total joint arthroplasty is unknown. METHODS In this retrospective cross-sectional study of 50 adults with secondary OA due to rheumatic diseases, we evaluated dual energy X-ray absorptiometry (DXA) measurements of both hips and the spine performed within 3 months prior to arthroplasty (n = 25 total hip arthroplasty, THA; n = 25 total knee arthroplasty, TKA). We analyzed various demographic and disease-specific characteristics and their effect on DXA results by using group comparisons and multivariate linear regression models. RESULTS Although patients undergoing TKA were younger (63.2 ± 14.2 vs. 71.0 ± 10.8 yr., p = 0.035), osteoporosis was observed more frequently in patients scheduled for TKA than THA (32% vs. 12%). Osteopenia was detected in 13/25 patients (52%) in both the THA and TKA cohort. In the THA cohort, female sex, lower BMI and prednisolone use were associated with lower T-score in the hip. In TKA patients, higher OA grade determined by Kellgren-Lawrence score was associated with lower T-score in the hip of the affected side. CONCLUSIONS Osteoporosis is present in a considerable frequency of rheumatic patients with end-stage OA, and THA and TKA patients show distinct frequencies and risk factors of low BMD. Our findings point to a potential value of DXA regarding preoperative evaluation of bone status.
Collapse
Affiliation(s)
- Moritz Mühlenfeld
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - André Strahl
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Ulrich Bechler
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Nico Maximilian Jandl
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany.,Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestrasse 59, 22529, Hamburg, Germany
| | - Jan Hubert
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Tim Rolvien
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany. .,Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, Lottestrasse 59, 22529, Hamburg, Germany.
| |
Collapse
|
12
|
Springer B, Bechler U, Koller U, Windhager R, Waldstein W. Online Videos Provide Poor Information Quality, Reliability, and Accuracy Regarding Rehabilitation and Return to Sport After Anterior Cruciate Ligament Reconstruction. Arthroscopy 2020; 36:3037-3047. [PMID: 32679296 DOI: 10.1016/j.arthro.2020.07.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 07/06/2020] [Accepted: 07/06/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To investigate the information quality available on YouTube regarding rehabilitation and return to sport (RTS) after anterior cruciate ligament reconstruction (ACLR). METHODS By use of The Onion Router software and predefined search terms, 140 YouTube videos regarding rehabilitation and RTS after ACLR were systematically included. Three scoring systems were used to analyze the included videos: (1) Journal of the American Medical Association (JAMA) benchmark criteria; (2) Global Quality Score (GQS); and (3) self-developed scores for rehabilitation after ACLR and RTS after ACLR, following American Academy of Orthopaedic Surgeons guidelines and current evidence. RESULTS The vast majority of the included videos offered poor information quality, reliability, and accuracy. Videos that were uploaded by medically trained professionals showed significantly higher information quality regarding rehabilitation (P = .006 for JAMA score, P < .001 for GQS, and P = .001 for rehabilitation score) and regarding RTS (P < .001 for JAMA score, P < .001 for GQS, and P < .001 for RTS score) compared with commercial videos or personal-testimony videos. Multivariate linear regression also revealed medically trained professionals as significant predictors of higher information quality regarding rehabilitation (β = 0.496 [P < .001] for JAMA score, β = 1.3 [P < .001] for GQS, and β = 3.7 [P < .001] for rehabilitation score) and RTS (β = 0.754 [P < .001] for JAMA score, β = 1.3 [P < .001] for GQS, and β = 5.3 [P < .001] for RTS score). CONCLUSIONS The average information quality, reliability, and accuracy of YouTube videos regarding rehabilitation and RTS after ACLR are poor. The information quality of related YouTube videos from medically trained professionals is significantly higher compared with commercial videos or personal-testimony videos. CLINICAL RELEVANCE Current YouTube videos regarding rehabilitation and RTS after ACLR do not meet the necessary quality standards. Physicians should also be able to provide alternative sources of high-quality information.
Collapse
Affiliation(s)
- Bernhard Springer
- Department of Orthopaedic and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Ulrich Bechler
- Department of Orthopaedics, University Hospital Hamburg-Eppendorf, Hamburg, Germany
| | - Ulrich Koller
- Department of Orthopaedic and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Reinhard Windhager
- Department of Orthopaedic and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Wenzel Waldstein
- Department of Orthopaedic and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria.
| |
Collapse
|
13
|
Springer B, Bechler U, Waldstein W, Rueckl K, Boettner CS, Boettner F. The influence of femoral and tibial bony anatomy on valgus OA of the knee. Knee Surg Sports Traumatol Arthrosc 2020; 28:2998-3006. [PMID: 31595340 DOI: 10.1007/s00167-019-05734-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 09/25/2019] [Indexed: 02/07/2023]
Abstract
PURPOSE Approximately 10% of all patients that require a total knee arthroplasty present with valgus osteoarthritis (OA) of the knee. Valgus OA goes along with posterolateral bone loss and lateral soft tissue tightness. The role of malalignment on the development of OA is not fully understood. The current study investigates whether the femoral offset (FO), femoral mechanical-anatomical (FMA) angle, anatomical lateral distal femur angle (aLDFA), mechanical lateral distal femur angle (mLDFA), medial proximal femur angle (MPFA), medial proximal tibia angle (MPTA) or lateral distal tibia angle (LDTA) differ in patients with valgus OA of the knee. METHODS FO, FMA angle, aLDFA, mLDFA, MPFA, MPTA and LDTA were assessed and compared between 100 consecutive knees with minimal valgus OA (50 male, 50 female) and 100 consecutive knees with minimal varus OA (50 male, 50 female). RESULTS FO was significantly higher in males with valgus OA (p = 0.002) and females with varus OA (p = 0.01). The observed values for the FMA angle were significantly higher in males with valgus OA (p = 0.002) and females with varus OA (p = 0.041). The aLDFA and mLDFA were significantly smaller in all patients with valgus OA (p < 0.001). No differences between the varus and valgus groups were detected regarding MPFA (males: p = 0.052; females: p = 0.719). Tibial measurements showed significantly higher values for the MPTA (p < 0.001) in both valgus groups and no difference for LDTA (men: p = 0.139; women: p = 0.196). CONCLUSION Bony alterations in the femoral anatomy seem to be more important than in the tibial anatomy. While in male patients with valgus OA, the main anatomic variation is the hypoplasia of the lateral femoral condyle, in females both decreased femoral offset of the hip as well as hypoplasia of the lateral condyle are present. LEVEL OF EVIDENCE III.
Collapse
Affiliation(s)
- Bernhard Springer
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
- Department of Orthopaedics, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Ulrich Bechler
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Wenzel Waldstein
- Department of Orthopaedics, Vienna General Hospital, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria
| | - Kilian Rueckl
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Cosima S Boettner
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Friedrich Boettner
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.
| |
Collapse
|
14
|
Boettner F, Bechler U, Springer B, Faschingbauer M, Jungwirth-Weinberger A. Impaction Bone Grafting in Revision Total Knee Arthroplasty-Using Mesh and Cone to Contain the Defect: A Report of 3 Cases. Arthroplast Today 2020; 6:578-584. [PMID: 32802928 PMCID: PMC7419255 DOI: 10.1016/j.artd.2020.07.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 06/29/2020] [Accepted: 07/04/2020] [Indexed: 11/29/2022] Open
Abstract
Uncontained tibial bone defects are a challenge in revision total knee arthroplasty. The present study reports on the results of a modified surgical technique for impaction bone grafting using metaphyseal cones and wire mesh. Three patients (2 male, 1 female; average age: 71.3 years) underwent revision total knee arthroplasty. All patients presented with uncontained medial tibial bone defects, one of the patients with an additional posterior cortical tibial split fracture. All cases were treated with a metaphyseal cone and outside mesh to create a contained defect. Between the mesh and cone, fresh frozen cancellous chips mixed with β-tricalcium phosphate were impacted. No evidence of loosening or osteolysis was present at 3.6-year follow-up. Impaction bone grafting using an outside mesh and inside cone for defect containment provides a durable reconstruction of tibial bone defects.
Collapse
Affiliation(s)
- Friedrich Boettner
- Adult Reconstruction and Joint Replacement Department, Hospital for Special Surgery, New York, NY, USA
| | - Ulrich Bechler
- Department of Orthopedics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Bernhard Springer
- Department of Orthopaedics and Trauma Surgery, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | | | - Anna Jungwirth-Weinberger
- Adult Reconstruction and Joint Replacement Department, Hospital for Special Surgery, New York, NY, USA.,Department of Orthopedics and Traumatology, Cantonal Hospital Baden, Baden, Switzerland
| |
Collapse
|
15
|
Rueckl K, Liebich A, Bechler U, Springer B, Rudert M, Boettner F. Return to sports after hip resurfacing versus total hip arthroplasty: a mid-term case control study. Arch Orthop Trauma Surg 2020; 140:957-962. [PMID: 32296965 DOI: 10.1007/s00402-020-03414-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Indexed: 01/23/2023]
Abstract
BACKGROUND Hip resurfacing (HR) is an alternative to conventional total hip arthroplasty (THA) for the treatment of osteoarthritis (OA) in very active, young male patients. However, there is no study in the literature that has proven its benefits for high-impact sport over standard primary THA. The aim of the current study was to investigate the return to sport and function level of male patients after THA vs. HR. MATERIALS AND METHODS This prospective study is based on a telephone questionnaire for general health and sports activities. 40 HRs were matched with 40 THAs based on preoperative University of California Arthroplasty Score (UCLA), BMI, age at time of surgery and age at follow-up. The mean follow-up period was 56 months (range 24-87 months). RESULTS HR patients showed a significantly higher High-activity arthroplasty score (HAAS) (14.9 vs. 12.9, p < 0.001) and Lower extremity activity scale (LEAS) (15.9 vs. 14.1, p < 0.001) and reached significantly higher values in the Hip cycle score (HCS) (44.7 vs. 35.7 p = 0.037) and Impact score (IS) (40.9 vs. 29.6, p < 0.002) than THA patients. No significant differences were found in the HOOS function section (91.4 vs. 90.3, p = 0.803) and the Pain numeric rating scale (NRS)-11 (0.6 vs. 0.9 p = 0.169). Patients with HR had a slightly higher Harris hip score (HHS) (97.8 vs. 95.6, p = 0.015) CONCLUSION: The current study suggests that young male patients are able to engage in higher activity levels after HR compared to standard THA.
Collapse
Affiliation(s)
- Kilian Rueckl
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.,Department of Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Brettreichstrasse 11, 97074, Wuerzburg, Germany
| | - Alina Liebich
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.,Department of Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Brettreichstrasse 11, 97074, Wuerzburg, Germany
| | - Ulrich Bechler
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Bernhard Springer
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Maximilian Rudert
- Department of Orthopedic Surgery, Koenig-Ludwig-Haus, University of Wuerzburg, Brettreichstrasse 11, 97074, Wuerzburg, Germany
| | - Friedrich Boettner
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.
| |
Collapse
|
16
|
Springer B, Bechler U, Waldstein W, Rueckl K, Boettner F. Five Questions to Identify Patients With Osteoarthritis of the Knee. J Arthroplasty 2020; 35:52-56. [PMID: 31563394 DOI: 10.1016/j.arth.2019.08.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 08/07/2019] [Accepted: 08/26/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND To treat the increasing number of patients with osteoarthritis (OA) of the knee, high-volume institutions rely on central referral services as first contact point. Depending on the grading of arthritis, patients will be referred to a nonoperative or operative care provider. The present study reports on a simple 5-step questionnaire to identify patients with OA (Kellgren/Lawrence [KL] grade ≥2) of the knee to improve efficiency of referrals. METHODS We included 998 patients who contacted the physician referral service at the author's institution complaining of knee pain and divided them into 2 groups. The study group included patients with an appointment and consisted of 646 patients (345 women [53.4%] and 301 men [46.6%]). X-rays of the knee were graded according to the KL classification system. The control group of patients who did not make an appointment consisted of 352 patients (187 women [53.1%] and 165 men [46.9%]). These patients were contacted to evaluate whether they had been diagnosed with OA of the knee since their initial call, to assure that the study group was not exposed to a selection bias. RESULTS Logistic regression revealed 5 questions as significant predictors for OA of the knee (KL grade ≥2). When combining both groups, an 86.9% sensitivity, a 73.3% specificity, and an 84.3% overall accuracy were reached, when patients answered 3 or more questions positively. CONCLUSION The present study revealed a simple 5-step questionnaire to identify patients with OA of the knee. Implementation of the questionnaire has the potential to improve the accuracy of referral processes and streamline organization before the first appointment.
Collapse
Affiliation(s)
- Bernhard Springer
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, New York, NY; Department of Orthopedics, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Ulrich Bechler
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, New York, NY
| | - Wenzel Waldstein
- Department of Orthopedics, Vienna General Hospital, Medical University of Vienna, Vienna, Austria
| | - Kilian Rueckl
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, New York, NY
| | - Friedrich Boettner
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, New York, NY
| |
Collapse
|
17
|
Rueckl K, Runer A, Bechler U, Faschingbauer M, Boelch SP, Sculco PK, Boettner F. The posterior-anterior-flexed view is essential for the evaluation of valgus osteoarthritis. A prospective study on 134 valgus knees. BMC Musculoskelet Disord 2019; 20:636. [PMID: 31888584 PMCID: PMC6937983 DOI: 10.1186/s12891-019-3012-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 12/18/2019] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Radiographic imaging is an important tool to assess osteoarthritis (OA). Lateral compartment osteoarthritis (valgus OA) usually starts with cartilage degeneration along the posterior aspect of the lateral femoral condyle. There is evidence that the posterior-anterior (PA)-flexed view is more sensitive when diagnosing early stages of valgus OA compared to the anterior-posterior (AP) view. The current paper analyzes the value of the PA-flexed view for patients scheduled for total knee arthroplasty (TKA).
Methods
Radiographs of 134 valgus knees were assessed prior to TKA. The minimal joint space width (minJSW) was measured on AP and PA-flexed views. The extent of mechanical deformity was measured on hip to ankle standing films.
Results
49 (36.6%) AP views showed Kellgren and Lawrence (K/L)-grade 4 osteoarthritis in the lateral compartment, 82 (63.4%) showed grade 3 or less. The PA-flexed view resulted in an increased K/L-grading to grade 4 for 53 knees (62.4%) that were considered grade 3 or less on standard AP-radiographs. There was a significant differences between lateral minJSW on AP and PA-flexed view for patients with up to 10 degrees of mechanical valgus deformity (p < 0.001), as well as 11 to 15 degrees of mechanical deformity (p = 0.021). Only knees with severe deformity of more than 15 degrees did not show a difference in minJSW between PA-flexed view and AP view (p = 0.345).
Conclusions
The PA-flexed view is superior to the standard AP view in quantifying the extent of valgus OA in patients with zero to fifteen degrees of valgus deformity. It is recommended for the initial assessment of patients with valgus osteoarthritis and better documents the extent of osteoarthritis prior to TKA.
Collapse
|
18
|
Abstract
BACKGROUND Increased age, obesity, and American Society of Anesthesiologists (ASA) Physical Status class III and IV have been reported as predictors for mortality and perioperative complications. High-volume institutions rely on central referral services as first contact point for patients. The current study reports on a simple four-step questionnaire to identify patients with ASA-physical status class III and IV to improve referral processes and optimize perioperative work ups. MATERIALS AND METHODS Seven hundred and seventy-five patients who called the physician referral service (PRS) at the author's institution and subsequently underwent surgery were enrolled in this study. The answers to the initial PRS questionnaire were analyzed. The study cohort consisted of 414 women (53.4%) and 361 men (46.6%) with an average age of 61.4 years (range 44-90 years) at the time of surgery. RESULTS Binary logistic regression revealed hypertension, diabetes mellitus (using medication), using blood thinner (other than Aspirin) and a number of 4-9 prescribed medication, respectively, as predictors for ASA III and IV. Receiver-operating characteristic (ROC) curve analysis identified a sensitivity of 82.4%, a specificity of 82.9%, and an accuracy of 82.8%, when two of these four questions are answered "yes". The area under the curve for this analysis was 0.876 [95% confidence interval (CI) 0.845-0.908]. Positive and negative likelihood ratios were 4.8 (95% CI 4.0-5.8) and 0.2 (95% CI 0.1-0.3), respectively. CONCLUSIONS This study revealed a simple four-step questionnaire to identify patients with ASA III or IV before a medical appointment. This helps to balance referrals between multiple providers in high-volume medical groups.
Collapse
Affiliation(s)
- Bernhard Springer
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Ulrich Bechler
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Andi Kolodny
- Physician Referral Service, Hospital for Special Surgery, New York, NY, USA
| | - Kilian Rueckl
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA
| | - Friedrich Boettner
- Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, 535 E 70th Street, New York, NY, 10021, USA.
| |
Collapse
|
19
|
Rueckl K, Boettner F, Bechler U, Baral EC, Wright TM, Sculco PK. Fracture of an S-ROM stem at the sleeve-stem junction. Arthroplast Today 2018; 4:295-299. [PMID: 30186908 PMCID: PMC6123181 DOI: 10.1016/j.artd.2018.02.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 02/09/2018] [Accepted: 02/09/2018] [Indexed: 12/02/2022] Open
Abstract
Fracture of a well-ingrown femoral component is a rare and often challenging complication. Modular junctions and sleeve interfaces have been identified as one potential point of weakness with corrosion and fretting being contributing factors to ultimate femoral component fracture. Stem fractures at the sleeve interface were reported occasionally for the proximal ingrowth modular Emperion System (Smith and Nephew, Memphis, TN). However, this failure mechanism has been reported infrequently, often associated with corrosion at the modular junction, for the similarly designed S-ROM system (DePuy Orthopedics Inc., Warsaw, IN). We present the case of a 52-year-old patient, with a body weight of 84 kg (185 lbs) and a body mass index of 30.6 kg/m2, who suffered a fatigue fracture of a 14 × 09 × 130 mm S-ROM stem 42 months after implantation. The present study presents the results of the surface analysis, discusses possible failure mechanisms, provides treatment guidelines, and a review of the literature revealing 15 cases of failure at the level of the stem-sleeve junction. In particular, modifiable risk factors for potential stem failure, including stem diameter, stem offset, and the resulting cantilever bending forces on the proximal sleeve-stem junction, are discussed in detail.
Collapse
Affiliation(s)
- Kilian Rueckl
- Hospital for Special Surgery, New York, NY, USA.,Department for Orthopedic Surgery, University of Wuerzburg, Germany
| | | | | | | | | | | |
Collapse
|
20
|
Rueckl K, Boettner F, Maza N, Runer A, Bechler U, Sculco P. The posterior-anterior flexed view is better than the anterior-posterior view for assessing osteoarthritis of the knee. Skeletal Radiol 2018; 47:511-517. [PMID: 29159676 DOI: 10.1007/s00256-017-2815-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 10/27/2017] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The aim of this study is to determine whether the posterior-anterior (PA)-flexed view improves the radiographic assessment of patients with knee pain compared with the standard standing anterior-posterior radiograph. MATERIALS AND METHODS Three hundred and sixty-five patients with knee pain underwent anterior-posterior (AP), PA flexed, lateral, and Merchant radiographs of the knee. Knees were grouped as mild (Kellgren and Lawrence [K-L] 1-2) or severe (K-L 3-4) osteoarthritis (OA) and either varus (medial compartment), valgus (lateral compartment), or patellofemoral OA. RESULTS In knees with mild valgus OA on AP view (K-L 1-2), the PA flexed view was more sensitive than the AP view. The measured lateral minimal joint space width (minJSW) decreased more than 2 mm in 68% of the patients, resulting in an increase in K-L grade (3 or 4). In patients with severe valgus OA and in all patients with varus and patellofemoral OA, there was no difference between AP and PA flexed view with regard to radiographic measurements or KL grade. Based on the Medicare reimbursement rate using the PA flexed view alone instead of both views reduced imaging costs by 47%. CONCLUSION The PA flexed view better classifies the severity of lateral compartment disease in patients with mild valgus OA and provides comparable diagnostic sensitivity for joint space narrowing in varus- and patellofemoral OA. Using the PA flexed view alone was more cost effective than using the combination of AP and PA flexed imaging.
Collapse
Affiliation(s)
- Kilian Rueckl
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
| | - Friedrich Boettner
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Noor Maza
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.,Icahn School of Medicine at Mount Sinai, 1468 Madison Avenue, New York, NY, 10029, USA
| | - Armin Runer
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Ulrich Bechler
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Peter Sculco
- Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| |
Collapse
|