What Are Risk Factors for 30-day Morbidity and Transfusion in Total Shoulder Arthroplasty? A Review of 1922 Cases

Higher modified frailty index score is associated with 30-day postoperative complications following revision total shoulder arthroplasty

Background

Previous studies have shown that increased 5-item modified frailty index (mFI-5) scores are associated with poor surgical outcomes. This study seeks to determine whether the comorbidities comprising the mFI-5 were correlated with poor outcomes following revision total shoulder arthroplasty (TSA).

Methods

Utilizing the National Surgical Quality Improvement Program database, a mFI-5 score was calculated for all patients 50 years and older who underwent revision TSA between 2013 and 2019. Pearson's Chi-squared tests and multivariable regression analysis were used to evaluate the association of the mFI score with various postoperative complications.

Results

Patients with a mFI-5 score of 2+ had significantly increased risk of readmission (OR 2.58), bleeding requiring transfusion (OR 3.66), extended length of stay (OR 2.43), and discharge to a non-home destination (OR 3.22) compared to patients with a mFI-5 score of 0. Relative to patients with a score of 1, those with a mFI-5 score of 2+ had an increased risk of postoperative transfusion (OR 2.46), extended length of stay (OR 2.16), and discharge to a non-home location (OR 2.84).

Discussion

The mFI-5 is a valuable tool that can stratify patients based on risk for postoperative complications following revision TSA.

Impact of a Recently Accredited Orthopedic Surgery Residency on Patient Outcome Scores in Total Shoulder Arthroplasty: A Retrospective Study

BACKGROUND

Patient-reported outcome measures are a valuable tool to evaluate an intervention from a patient's perspective. Previous evidence shows that, while resident involvement may increase operative times, it does not affect complications or patient-reported outcomes. This study sought to assess the impact of a new residency program on patient-reported outcome measures, operative time, and complication rates in total shoulder arthroplasty.

MATERIALS AND METHODS

A retrospective cohort study was performed of patients who underwent total shoulder arthroplasty at a single health care system. Demographic data, resident presence during shoulder arthroplasty, arthroplasty type, procedure duration, complications, and American Shoulder and Elbow Surgeons (ASES) score change were collected. Patients 18 years or older who underwent primary anatomic or reverse total shoulder arthroplasty were included. Patients who did not meet the inclusion criteria, had a preoperative diagnosis other than primary osteoarthritis, lacked preoperative and postoperative ASES scores, and canceled procedures were excluded.

RESULTS

A total of 139 patients were identified and included in our analysis. Ninety-seven total shoulder arthroplasties were performed with a resident not present, and 42 with a resident present. This study showed no significant effects of the presence or absence of a resident on ASES scores, complication rates, or surgery times.

CONCLUSION

This study adds to previous evidence indicating that attending orthopedic surgeons can support resident learning and surgical skill development while maintaining patient-reported outcome measures, surgical time, and complication rates similar to those without resident involvement when performing shoulder arthroplasty. [Orthopedics. 2025;48(2):104-110.].

High comorbidity burden and low incidence of adverse events in primary shoulder arthroplasty in tertiary care at a university hospital

Background

Reducing perioperative risk is in the focus of primary arthroplasty caregivers. Primary shoulder arthroplasty patients are considered among those with the lowest perioperative risk. Nonetheless, in tertiary care centres and university settings patients with significant comorbidities are being treated. It remains unclear whether the overall comorbidity burden is truly higher and if this results in an increased frequency of adverse events (AE). As a result, we conducted a study to assess the comorbidity burden and the frequency of major perioperative adverse events and predictive factors following primary shoulder arthroplasty in the university setting.

Methods

A retrospective cohort analysis was conducted on patients undergoing primary shoulder arthroplasty for a non-trauma, non-tumour indication from January 1st, 2014 through December 31st, 2018. Administrative data were recorded to assess comorbidity burden and revision surgery within the first postoperative year. Major adverse events were routinely recorded on a weekly basis by the treating physicians. Descriptive and comparative statistical analyses were performed. The cohort was compared against a large North American sample.

Results

Of 386 patients who underwent 400 primary shoulder arthroplasties 14 (3.5 %) experienced adverse events. While AE were distributed equally among anatomical and reverse shoulder arthroplasties, no adverse event was recorded in the 34 hemiarthroplasty patients. The cohort showed an increased comorbidity burden in international comparison. Peptic ulcer disease was significantly associated with AE, while mild liver disease experienced a trend towards AE.

Conclusion

We found an increased comorbidity burden and a low rate of AE for primary shoulder arthroplasty in a tertiary care and university setting. The distinct role of peptic ulcer disease in this cohort and the trend in mild liver disease merit further investigation in larger samples. The findings underscore the importance of perioperative risk assessment and management.

Level of evidence

III, retrospective cohort study.

Revision total elbow arthroplasty is associated with a high rate of 30-day complications: A descriptive analysis of a national database

Introduction

Revision total elbow arthroplasty (TEA) is indicated for component loosening, periprosthetic joint infection, and fractures. Previous investigations into revision TEA complications have small sample sizes and limited exploration of acute complications. This study aims to characterize the 30-day complications and associated demographics of patients undergoing revision TEA using a large national database.

Methods

The 2015-2020 American College of Surgeons National Surgical Quality Improvement Program database was used to identify all revision TEA patients.

Results

The analysis included 158 patients (average age 62.6 years). The overall complication rate was 13.9% (n = 22). The most common 30-day complications were organ/space surgical site infection (3.8%, n = 6), unplanned readmission (3.2%, n = 5), intraoperative or postoperative transfusion (3.2%, n = 5), and unplanned reoperation (1.9%, n = 3). Patients with a history of dyspnea or steroid/immunosuppressant use for a chronic condition had significantly higher rates of bleeding requiring transfusion (p = .029 and p = .021, respectively). Additionally, patients aged 80 years or older had a significantly higher rate of unplanned readmission (p = .032).

Conclusion

Revision TEA has a 13.9% rate of complications within 30-days of surgery, with most involving surgical site infection, unplanned readmission, and blood transfusion.

Level of Evidence

IV.

A Systematic Review of Patient Selection Criteria for Outpatient Total Shoulder Arthroplasty

The utilization of total shoulder arthroplasty (TSA) is increasing, driving associated annual health care costs higher. Opting for outpatient over inpatient TSA may provide a solution by reducing costs. However, there is no single set of accepted patient selection criteria for outpatient TSA. Here, the authors identify and systematically review 14 articles to propose evidence-based criteria that merit postoperative admission. Together, the studies suggest that patients with limited ability to abmluate independently or a history of congestive heart failure may benefit from postoperative at least one night of hospital based monitoring and treatment.

Delayed elective total shoulder arthroplasty: causes and eventual outcomes

PURPOSE

The purpose of this study is to identify risk factors for delays in planned total shoulder arthroplasty (TSA) and determine the perioperative outcomes of TSAs that experienced a delay.

METHODS

The American College of Surgeons National Quality Improvement Program (NSQIP) database was queried from 2006 to 2019 for primary TSA. Delayed TSA was defined as surgery that occurred greater than one day after hospital admission. Patient demographics, comorbidities, and post-operative complications were collected and compared; the incidence of delayed TSA was analyzed.

RESULTS

The delayed patients were older, had a higher BMI, a higher rate of recent prior major surgery, and more comorbidities. Delayed patients had higher rates of postoperative complications, return to the OR, and 30-day readmission. Between 2006 and 2019, the rate of delayed TSA decreased.

CONCLUSION

Surgeons should take care to ensure that patients with comorbidities undergo thorough preoperative clearance to prevent same-day cancellations and postoperative complications.

Open Biceps Tenodesis and Tenotomy Have Low 30-Day Postoperative Complication Rates

Purpose

To compare 30-day postoperative rates of adverse events, particularly infection rates, between open biceps tenodesis and biceps tenotomy.

Methods

The American College of Surgeons National Surgical Quality Improvement Program was filtered using Current Procedural Terminology codes to identify patients undergoing open biceps tenodesis and tenotomy from 2010 to 2021. Patients were divided into cohorts based on procedure type. Propensity score matching was used to account for confounding variables. Statistical analyses were conducted to compare 30-day postoperative outcomes between cohorts, as well as to evaluate secondary risk factors for complications.

Results

Overall, 12,367 patients were included in the study with 11,417 undergoing open biceps tenodesis and 950 undergoing biceps tenotomy. After matching, 1,900 patients were included in the final analysis. The rate of outpatient procedures in the tenodesis cohort was significantly higher than in the tenotomy cohort. Rates of any adverse event (AAE), sepsis, pneumonia, reoperation, and extended length of stay (LOS) were significantly higher in the tenotomy cohort compared with the tenodesis cohort. There was no difference in infection rates or wound dehiscence between the 2 groups. After multivariable analysis, increasing age, longer operative time, and history of bleeding disorders were associated with significantly higher odds of developing AAE.

Conclusions

In this study, we found that tenotomy and open tenodesis are both safe options for treatment of biceps pathology. The overall rate of developing AAE and the rate of postoperative sepsis were higher in the tenotomy cohort. In addition, rates of postoperative infection and wound dehiscence did not vary between the 2 groups. Small differences were additionally observed in rates of pneumonia, return to the operating room, and extended LOS, and these rates were higher in the tenotomy cohort.

Level of Evidence

Level III, retrospective comparative study.

The role of hypertensive status in the preoperative patient selection of TSA

Background

This study investigates the relationship between hypertension and postoperative complications following total shoulder arthroplasty (TSA).

Methods

All patients who underwent TSA between 2015 and 2020 from the American College of Surgeons National Surgical Quality Improvement database were surveyed. The study population was divided into patients with no hypertension and patients with hypertension. Patient demographics, comorbidities, and 30-day postoperative complications were collected. Logistic regression analysis was used to investigate the relationship between hypertension and postoperative complications.

Results

Compared to no hypertension, hypertension was significantly associated with an increased likelihood of experiencing sepsis (P = .021), pneumonia (P = .019), myocardial infarction (P = .038), blood transfusions (P = .006), readmission (P < .001), reoperation (P < .001), non-home discharge (P < .001), and any complication (P < .001). After accounting for significant patient variables, compared to no hypertension, hypertension was independently significantly associated with an increased likelihood of experiencing reoperation (odds ratio 1.48; 95% CI, 1.142-1.905; P = .003) and any complication (odds ratio 1.10; 95% CI, 1.008-1.205; P = .033).

Conclusion

In this study, we identified hypertension as an independent significant predictor for both reoperation and any complication following TSA. This study provides evidence for incorporating a patient's hypertensive status into preoperative screening, aiming to improve surgical candidate selection and surgical outcomes following TSA.

Risk factors for postoperative transfusion in diabetic patients following total shoulder arthroplasty

Background

Diabetes has been reported as a risk factor for postoperative transfusion following total shoulder arthroplasty (TSA). However, the risk factors specific to diabetic patients that increase their likelihood of postoperative blood transfusion remains understudied. The purpose of the study was to investigate the risk factors that are associated with 30-day postoperative transfusion among diabetic patients who undergo TSA.

Methods

The American College of Surgeons National Surgical Quality Improvement Program database was queried for all patients who underwent TSA between 2015 and 2020. Both patients with and without diabetes were divided into cohorts based on 30-day postoperative transfusion requirement. Bivariate logistic regression was used to compare patient demographics and comorbidities. Multivariate logistic regression, adjusted for all significant patient demographics and comorbidities, was used to identify the characteristics independently associated with postoperative transfusion.

Results

A total of 4376 diabetic patients remained after exclusion criteria, with 4264 (97.4%) patients who did not require postoperative transfusion and 112 (2.6%) patients who did require postoperative transfusion. On multivariate analysis, female gender (odds ratio [OR] 2.43, 95% confidence interval [CI] 1.52-3.89; P < .001), American Society of Anesthesiologists ≥3 (OR 2.46, 95% CI 1.10-5.48; P = .028), bleeding disorder (OR 2.94, 95% CI 1.50-5.76; P = .002), transfusion prior to surgery (OR 12.19, 95% CI 4.25-35.00; P < .001), preoperative anemia (OR 8.76, 95% CI 5.47-14.03; P < .001), and operative duration ≥129 minutes (OR 4.05, 95% CI 2.58-6.36; P < .001) were found to be independent risk factors for postoperative transfusion among diabetic patients. Our nondiabetic cohort included 19,289 patients, with 341 (1.8%) requiring postoperative transfusion. On Multivariate analysis, we found similar risk factors for transfusion to our diabetic population, as well as age ≥75 (OR 1.80, 95% CI 1.37-2.35; P < .001) and dependent functional status (OR 2.16, 95% CI 1.40-3.32; P < .001) to be independent risk factors for postoperative transfusion among nondiabetic patients.

Conclusion

Female gender, American Society of Anesthesiologists ≥3, bleeding disorder, transfusion prior to surgery, preoperative anemia, and operative duration ≥129 minutes were independently associated with postoperative transfusion following TSA in diabetic patients. These findings encourage physicians to carefully assess patients with diabetes preoperatively to minimize adverse outcomes.

The effect of operative time on surgical-site infection following total shoulder arthroplasty

BACKGROUND

Many factors contribute to the risk of surgical-site infection (SSI) following total shoulder arthroplasty (TSA). Operative time is a modifiable factor that may contribute to SSI occurrence after TSA. This study aimed to determine the correlation between operative time and SSI following TSA.

MATERIALS AND METHODS

By use of the American College of Surgeons National Surgical Quality Improvement Program database, a total of 33,987 patient records were queried from 2006 to 2020 and sorted by operative time and the development of an SSI in the 30-day postoperative period. Odds ratios for the development of an SSI were calculated based on operative time.

RESULTS

An SSI developed in the 30-day postoperative period in 169 of the 33,470 patients in this study, resulting in an overall SSI rate of 0.50%. A positive correlation was identified between operative time and the SSI rate. An inflection point was identified at an operative time of 180 minutes, with a significant increase in the rate of SSI occurrence for operative times >180 minutes.

DISCUSSION AND CONCLUSION

Increased operative time was shown to be strongly correlated with an increased risk of SSI within 30 days following surgery, with a significant inflection point at 180 minutes. The target operative time for TSA should be <180 minutes to reduce the risk of SSI.

Smoking is an independent risk factor for complications in outpatient total shoulder arthroplasty

Background

Smoking is a major public health concern and an important risk factor to consider during preoperative planning. Smoking has previously been reported as the single most important risk factor for developing postoperative complications after elective orthopedic surgery. However, there is limited literature regarding the postoperative complications associated with smoking following outpatient total shoulder arthroplasty (TSA). The purpose of this study was to investigate the association between smoking status and early postoperative complications following outpatient TSA using a large national database.

Methods

We queried the American College of Surgeons National Surgical Quality Improvement Program database for all patients who underwent TSA between 2015 and 2020. Smoking status in National Surgical Quality Improvement Program is defined as any episode of smoking with 12 months prior to surgery. Bivariate logistic regression was used to identify patient demographics, comorbidities, and complications significantly associated with current or recent smoking status in patients who underwent TSA with a length of stay (LOS) of 0. Multivariate logistic regression, adjusted for all significantly associated patient demographics and comorbidities, was used to identify associations between current or recent smokers and 30-day postoperative complications.

Results

22,817 patients were included in the analysis, 2367 (10.4%) were current or recent smokers and 20,450 (89.6%) were nonsmokers. These patients were further stratified based on LOS: 2428 (10.6%) patients had a LOS of 0 days, 15,267 (66.9%) patients had a LOS of 1 day, and 5122 (22.4%) patients had a LOS of 2 days. Within the outpatient cohort (LOS = 0), 202 (8.3%) patients were current or recent smokers and 2226 (91.7%) were nonsmokers. Multivariate logistic regression identified current or recent smoking status to be independently associated with higher rates of myocardial infarction (odds ratio [OR] 9.80, 95% confidence interval [CI] 1.48-64.96; P = .018), deep vein thrombosis (OR 20.05, 95% CI 1.63-247.38; P = .019), and readmission (OR 2.82, 95% CI 1.19-6.67; P = .018) following outpatient TSA. Readmission was most often due to pulmonary complication (n = 10, 22.7%).

Conclusion

Current or recent smoking status is independently associated with higher rates of myocardial infarction, deep vein thrombosis, and readmission following TSA performed in the outpatient setting. Current or recent smokers may benefit from an inpatient setting of minimum 2 nights. As outpatient TSA becomes increasingly popular, refining proper patient selection criteria is imperative to optimizing postoperative outcomes.

Local anesthetic with monitored anesthesia care in cephalomedullary nailing of proximal femur fractures

INTRODUCTION

Proximal femur fractures have high rates of morbidity, mortality, and perioperative complications. Limiting anesthesia, especially in the elderly population, is a priority from a medical perspective. The goal of the current study is to present a technique of using local anesthetic with monitored anesthesia care (MAC) for the fixation of intertrochanteric (IT) femur fractures with cephalomedullary nailing (CMN), provide early clinical results in a small series of patients, and evaluate the safety, efficiency, and anesthetic efficacy of our technique.

HYPOTHESIS

The use of only local anesthetic with MAC for the fixation of IT fractures is safe and leads to decreased operative times when compared to spinal and general anesthesia.

MATERIALS AND METHODS

Patients undergoing cephalomedullary nailing (CMN) with a long nail for IT femur fractures by a single surgeon from January 2020 to June 2021 were identified retrospectively from a prospectively-collected patient registry. Patient demographics, operative time, length of hospital stay, perioperative medication use, and complications were collected. Analysis of variance, Chi2, linear regression, and two-sampled T-tests were performed to analyze potential differences between the local anesthesia group and the general or spinal anesthesia group.

RESULTS

Thirty-seven patients were identified. Eleven patients underwent CMN using local anesthesia with MAC, 11 using spinal anesthesia, and 15 using general anesthesia. The local anesthesia group demonstrated significantly lower operating room times and anesthesia induction to incision time compared to other anesthesia techniques. The local anesthesia group also trended towards less need for vasopressors during surgery and less postoperative delirium. No differences were identified in intraoperative narcotic use, complications, patient mortality, or hospital readmissions.

CONCLUSIONS

Local anesthesia with MAC for the treatment of IT fractures with CMN was associated with decreased operating room times and had similar complication rates including blood transfusions, readmissions, and mortalities, when compared to spinal and general anesthesia.

LEVEL OF EVIDENCE

III, therapeutic.

The influence of elevated international normalized ratio on complications following total shoulder arthroplasty

Background

Identifying preoperative risk factors for complications following total shoulder arthroplasty (TSA) has both clinical and financial implications. The purpose of this study was to determine the influence of different degrees of preoperative INR elevation on complications following TSA.

Methods

Patients undergoing primary TSA from 2007 to 2018 were identified in a national database. Patients were stratified into 4 cohorts: INR of <1.0, INR of >1.0 to 1.25, INR of >1.25 to 1.5, and INR of >1.5. Postoperative complications were assessed. Multivariate logistic regressions were performed to adjust for differences in demographics and comorbidities among the INR groups.

Results

Following adjustment and relative to patients with an INR of <1.0, those with INR of >1.0-1.25, >1.25-1.5, and >1.5 had 1.6-times, 2.4-times, and 2.8-times higher odds of having postoperative bleeding requiring transfusion, respectively (p < 0.05 for all). Relative to patients with INR <1.0, those with INR of > 1.25-1.5 and INR of >1.5 had 7.8-times and 7.0-times higher odds of having pulmonary complications, respectively (p < 0.05 for both).

Discussion

With increasing INR levels, there is an independent and step-wise increase in odd ratios for postoperative complications. Current guidelines for preoperative INR thresholds may need to be adjusted for more predictive risk-stratification for TSA.

Level of Evidence

III.

Risks of chronic steroid or immunosuppressive therapy on total shoulder arthroplasty patients

Introduction

Patients on chronic corticosteroids/immunosuppressants (SI) undergoing orthopaedic surgery are at an increased risk for surgical complications and worse outcomes. However, whether or not chronic preoperative SI use increases the risk for 30-day complications in patients undergoing primary total shoulder arthroplasty (SA) has yet to be explored.

Methods

From 2006 to 2019, the National Surgical Quality Improvement Program (NSQIP) database was used to identify all patients who underwent primary SA (anatomic TSA and reverse TSA). Patients were stratified into two cohorts: chronic preoperative SI users and those without use. Bivariate and multivariate analyses were utilized in this study.

Results

Of the 26,979 patients who underwent primary SA, 25,656 (95.1%) patients did not have SI usage whereas 1323 (4.9%) patients had chronic preoperative SI usage. Following adjustment on multivariate analyses, compared to the non-SI usage cohort, patients who used SI had an increased risk of urinary tract infections (UTIs) (OR 1.87; p = 0.009) and septic shock (OR 7.14; p = 0.002). There were no differences in mortality between the two cohorts (p = 0.058).

Discussion and Conclusion

Chronic pre-operative SI use is an independent risk factor for septic shock and UTIs following primary SA. Surgeons and patients should be aware of these risks to better inform patient counseling and surgical decision making.

Understanding Medical Optimization for Patients Undergoing Shoulder Arthroplasty

Many surgeons seek to optimize their patients' comorbid conditions preoperatively to reduce postoperative complications. To effectively optimize patients before total shoulder arthroplasty, the surgeon should be familiar with recognizing and treating common medical comorbidities found in an orthopedic patient including anemia, diabetes, malnutrition, cardiovascular conditions, and history of deep venous thrombosis. Screening for depression or other mental illness should also be conducted preoperatively and managed accordingly before surgery. Preoperative opioid use and smoking have significant effects on postoperative outcomes and should be addressed before surgery.

Abnormal preoperative leukocyte counts and postoperative complications following total shoulder arthroplasty

Background

Total shoulder arthroplasty (TSA) has become the mainstay of treatment for degenerative glenohumeral arthritis, proximal humerus fracture, and rotator cuff arthropathy. The expanding indications for reverse TSA have increased the overall demand for TSA. This necessitates higher quality preoperative testing and risk stratification. White blood cell counts can be obtained from routine preoperative complete blood count testing. The association between abnormal preoperative white blood cell counts and postoperative complications has not been extensively studied. The purpose of this study was to investigate the association between abnormal preoperative leukocyte counts and 30-day postoperative complications following TSA.

Methods

The American College of Surgeons National Surgical Quality Improvement Program database was queried for all patients who underwent TSA between 2015-2020. Patient demographics, comorbidities, surgical characteristics, and 30-day postoperative complication data were collected. Multivariate logistic regression was used to identify postoperative complications associated with preoperative leukopenia and leukocytosis.

Results

In this study, 23,341 patients were included: 20,791 (89.1%) were in the normal cohort, 1307 (5.6%) were in the leukopenia cohort, and 1243 (5.3%) were in the leukocytosis cohort. Preoperative leukopenia was significantly associated with higher rates of bleeding transfusions (P = .011), deep vein thrombosis (P = .037), and non-home discharge (P = .041). After controlling for significant patient variables, preoperative leukopenia was independently associated with higher rates of bleeding transfusions (odds ratios [OR] 1.55, 95% confidence intervals [CI] 1.08-2.23; P = .017) and deep vein thrombosis (OR 2.26, 95% CI 1.07-4.78; P = .033). Preoperative leukocytosis was significantly associated with higher rates of pneumonia (P < .001), pulmonary embolism (P = .004), bleeding transfusions (P < .001), sepsis (P = .007), septic shock (P < .001), readmission (P < .001), and non-home discharge (P < .001). After controlling for significant patient variables, preoperative leukocytosis was independently associated with higher rates of pneumonia (OR 2.20, 95% CI 1.30-3.75; P = .004), pulmonary embolism (OR 2.43, 95% CI 1.17-5.04; P = .017), bleeding transfusions (OR 2.00, 95% CI 1.46-2.72; P < .001), sepsis (OR 2.95, 95% CI 1.20-7.25; P = .018), septic shock (OR 4.91, 95% CI 1.38-17.53; P = .014), readmission (OR 1.36, 95% CI 1.03-1.79; P = .030), and non-home discharge (OR 1.61, 95% CI 1.35-1.92; P < .001).

Conclusion

Preoperative leukopenia is independently associated with higher rates of deep vein thrombosis within 30 days following TSA. Preoperative leukocytosis is independently associated with higher rates of pneumonia, pulmonary embolism, bleeding transfusion, sepsis, septic shock, readmission, and non-home discharge within 30 days following TSA. Understanding the predictive value of abnormal preoperative lab values will aid in perioperative risk stratification and minimize postoperative complications.

What Is the Effect of Resident Involvement on Short-Term Outcomes after Distal Radius Fracture Surgery?

Background: The objective of this study was to assess whether resident involvement in distal radius fracture open reduction internal fixation (ORIF) affect 30-day postoperative complication, hospital readmission, reoperation and operative time. Methods: A retrospective study was performed using the American College of Surgeons (ACS) National Surgical Quality Improvement Program (NSQIP) database by querying the Current Procedural Terminology (CPT) codes for distal radius fracture ORIF from 1 January 2011 to 31 December 2014. A final cohort of 5,693 adult patients who underwent distal radius fracture ORIF during the study period were included. Baseline patient demographics and comorbidities, intraoperative factors, including operative time and 30-day postoperative outcomes, including complications, readmission and reoperations, were collected. Bivariate statistical analyses were performed to identify variable associated with complication, readmission, reoperation and operative time. The significance level was adjusted using a Bonferroni correction as multiple comparisons were performed. Results: In this study of 5,693 patients who underwent distal radius fracture ORIF, 66 patients had a complication, 85 patients were readmitted and 61 patients underwent reoperation within 30 days of surgery. Resident involvement in the surgery was not associated with 30-day postoperative complication, readmission or reoperation, but was associated with longer operative time. Moreover, 30-day postoperative complication was associated with older age, American Society of Anesthesiologists (ASA) classification, chronic obstructive pulmonary disease (COPD), congestive heart failure (CHF), hypertension and bleeding disorder. Thirty-day readmission was associated with older age, ASA classification, diabetes mellitus, COPD, hypertension, bleeding disorder and functional status. Thirty-day reoperation was associated with higher body mass index (BMI). Longer operative time was associated with younger age, male sex and the absence of bleeding disorder. Conclusions: Resident involvement in distal radius fracture ORIF is associated with longer operative time, but no difference in rates of episode-of-care adverse events. Patients may be reassured that resident involvement in distal radius fracture ORIF does not negatively impact short-term outcomes. Level of Evidence: Level IV (Therapeutic).

Outpatient total shoulder arthroplasty in the ambulatory surgery center: a comparison of early complications in patients with and without glenoid bone loss

Background

The purpose of this study is to compare the 90-day complications and readmission rates between patients undergoing total shoulder arthroplasty (TSA) in an ambulatory surgery center (ASC) with glenoid bone loss requiring an augmented glenoid component compared to patients without bone loss.

Methods

This is a retrospective cohort study of patients undergoing outpatient TSA at an ASC (2018-2021). Readmission, direct transfer, and complications were recorded. Major and minor complications were compared. Secondary outcomes included operative time, estimated blood loss, range of motion, and patient-reported outcome measures.

Results

There were 44 patients (45 shoulders) included in the study, 20 with augmented implants for glenoid bone loss and 25 nonaugmented with a concentric glenoid. There were no statistical differences in demographics. Two complications were seen in both the augmented and nonaugmented groups (10% vs. 8%). There were no readmissions or direct transfers. The augmented group had significantly increased preoperative glenoid retroversion (23° vs. 9°, P < .05), posterior humeral head subluxation (78% vs. 61%., P < .05), and longer operative time (124.4 min vs. 112.3 min., P < .05). Patient-specific instrumentation was used in 60% of augmented cases and 29% of nonaugmented cases.

Conclusion

There was no significant difference in complications, direct transfers, or readmissions between patients with and without glenoid bone loss being treated in an outpatient ASC. The augmented group had significantly worse preoperative deformities, longer operative times, and increased utilization of patient-specific instrumentation. Outpatient TSA in the setting of glenoid bone loss requiring augmentation was found to be safe and effective at a stand-alone ASC.

Iron deficiency anemia is associated with increased medical and implant-related complications and length of stay for patients undergoing total shoulder arthroplasty

BACKGROUND

Iron deficiency anemia (IDA) is associated with decreased bone mineral density and osteoporosis; however, studies investigating the effects of IDA in patients undergoing primary total shoulder arthroplasty (TSA) have not been well studied. The purpose of this study is to utilize a nationwide administrative claims database to investigate whether patients with diagnosed IDA undergoing primary TSA have higher rates of 1) in-hospital length of stay (LOS); 2) medical complications; and 3) implant-related complications.

METHODS

A retrospective review from 2005 to 2014 was conducted using the Medicare Standard Analytical Files. Patients with IDA undergoing primary TSA were identified and matched to controls without IDA, in a 1:5 ratio by age, sex, and medical comorbidities. Outcomes analyzed included in-hospital LOS and 90-day medical and implant-related complications. Mann-Whitney U tests compared in-hospital LOS, and multivariate logistic regression was used to calculate odds ratios (ORs) on the effects of IDA on postoperative complications after adjusting for age, sex, and Elixhauser Comorbidity Index.

RESULTS

A total of 17,689 patients with IDA and 88,445 without IDA participated in the matched-cohort analysis, with no differences in age, gender, and comorbidities (P = .99). IDA patients were found to have significantly longer in-hospital LOS (3-days vs. 2-days, P < .0001). IDA patients were also found to have significantly higher odds of 90-day implant-related complications (OR: 1.65, P < .0001), such as periprosthetic joint infections (OR: 1.80, P < .0001) and 90-day medical complications (OR: 2.87, P < .0001), including blood transfusions (OR: 10.37, P < .0001).

CONCLUSION

Patients with IDA undergoing primary TSA have significantly longer in-hospital LOS, and medical and implant-related complications. Patients were 10 times more likely to undergo a blood transfusion and 2 times more likely to have a periprosthetic fracture.

Trends in operative duration of total shoulder arthroplasty from 2008 to 2018: a national database study

Background

As total shoulder arthroplasty has emerged as the fastest growing joint replacement performed, optimizing surgical efficiency and patient outcomes is essential. The goals of the current study were to identify trends and factors affecting the operative time of total shoulder arthroplasty over a 10-year period.

Methods

The National Surgical Quality Improvement Program database was analyzed to determine the operative time and 30-day complications of total shoulder arthroplasty from 2008 to 2018. Factors affecting total shoulder arthroplasty operative time were also assessed. Multivariable linear regression was used to analyze operative time over years studied while controlling for patient demographics and comorbidities.

Results

A total of 20,587 total shoulder arthroplasty cases from 2008 to 2018 were included. Mean operative time in 2008 was 139.0 min, while in 2018, mean operative time decreased to 105.6 min (P < .001). Male sex, outpatient surgery, increased body mass index, and low preoperative hematocrit were associated with longer operative times, while elevated international normalized ratio, resident involvement, and elective surgeries were associated with decreased operative duration.

Discussion

Operative time for total shoulder arthroplasty has decreased from 2008 to 2018. Patient factors and comorbidities are associated with operative time, and such factors are important to consider in operative planning to ensure appropriate patient and surgeon expectations.

Current Status Regarding the Safety of Inpatient Versus Outpatient Total Shoulder Arthroplasty: A Systematic Review

BACKGROUND

Surgeons have begun to transition total shoulder arthroplasty (TSA) to the outpatient setting in order to contain costs and reallocate resources.

PURPOSE

The purpose of this systematic review was to evaluate the safety and cost of outpatient TSA by assessing associated complication rates, clinical outcomes, and total treatment charges.

METHODS

The MEDLINE, Embase, and Cochrane Library online databases were queried in March 2020 for studies on outpatient shoulder arthroplasty. Inclusion criteria were (1) a study population undergoing TSA, (2) discharge on the day of surgery, and (3) inclusion of at least 1 reported outcome.

RESULTS

Of 20 studies identified that met inclusion criteria, 14 were comparative studies involving an inpatient control group, 2 of which were matched by age and comorbidities. The remaining studies used control groups consisting of inpatient TSAs who were older or more medically infirm according to American Society of Anesthesiologists (ASA) or Charlson Comorbidity Index (CCI) scores. The combined average age of the outpatient and inpatient groups was 66.5 and 70.1 years, respectively. Patients who underwent outpatient TSA had similar rates of readmissions, emergency department visits, and perioperative complications in comparison to inpatients. Patients also reported comparably high levels of satisfaction with outpatient procedures. Four economic analyses demonstrated substantial cost savings with outpatient TSA in comparison to inpatient surgery.

CONCLUSION

In carefully selected patients, outpatient TSA appears to be equally safe but less resource intensive than inpatient arthroplasty. Nonetheless, there remains a need for larger prospective studies to decisively characterize the relative safety of outpatient TSA among patients with similar baseline health.

Assessment of perioperative total blood loss during total ankle arthroplasty

BACKGROUND

Although many authors have discussed total blood loss after arthroplasty of the knee, hip, and shoulder, reports on perioperative blood loss after total ankle arthroplasty (TAA) are rare. The purpose of this study was to assess total blood loss after TAA and to identify correlated factors.

METHODS

A total of 103 cases (99 patients) of TAA for end-stage ankle osteoarthritis were enrolled in this study. Perioperative total blood loss was divided into intraoperative and postoperative blood loss. The patient-related variables evaluated for total blood loss were age, sex, body mass index, American Society of Anesthesiologists Classification score, comorbidities, history of previous ankle surgery, preoperative use of anticoagulants, platelet count and prothrombin time/international normalized ratio. Operation-related variables including type of anesthesia, operation time, TAA implant, and procedures performed in addition to TAA (if any) were evaluated to analyze correlations with total blood loss. In addition, the rate of transfusions after surgery was identified, and risk factors for transfusion were statistically analyzed.

RESULTS

The total blood loss was mean 795.5±351.1mL, which included 462.2±248.5mL of intraoperative blood loss and 333.2±228.6mL of postoperative blood loss. Sex, TAA implant, and additional bony procedures performed along with TAA were significantly correlated with total blood loss (p=0.039, 0.024, 0.024, respectively) but the other variables were not significant (p>0.05). Transfusions were administered for 4 cases (3.8%) but no risk factors for transfusion could be identified.

CONCLUSION

The total blood loss after TAA was 795.5mL and the rate of transfusions was 3.8%. This study demonstrated that male sex, use of TAA implants with a larger cutting surface, and bony procedures performed in addition to TAA were associated with an increase in total blood loss after TAA. The findings of this study will help surgeons to better predict blood loss and make optimal surgical plans accordingly.

LEVEL OF EVIDENCE

Level IV, retrospective case series.

Comorbidity scores reported in anatomic and reverse total shoulder arthroplasty: a systematic review

BACKGROUND

Due to the aging population, the number of reverse shoulder arthroplasty (RSA) and anatomic shoulder arthroplasty (TSA) continue to increase annually. Although outcome measures are frequently reported in literature for patients who undergo shoulder arthroplasty, no studies have analyzed reporting of patient comorbidities in this population. The purpose of this study was to evaluate reporting of comorbidity indices in shoulder arthroplasty literature and assess how this reporting may inform management and outcomes.

METHODS

A database was compiled systematically using PubMed to identify articles pertaining to shoulder arthroplasty published between 2019 and 2021. The search terms, "reverse shoulder arthroplasty" and "anatomic shoulder arthroplasty," were used to identify clinical studies. Non-clinical (e.g., translational and basic science) and review articles were excluded. Included studies were then analyzed for reporting of comorbidity indices.

RESULTS

A total of 199 articles were included in this review and reported comorbidities. Of these, 15.6% (31 of 199) pertained to TSA, while 84.4% (168 of 199) pertained to RSA. Within this review, 57.8% (115 of 199) articles utilized comorbidity scores, while 42.2% (84 of 199) reported only comorbid diagnoses. Among the scores utilized, the American Society of Anesthesiologists (ASA) physical status classification system was the most widely used among both the TSA (52.9%, 9 of 17) and the RSA studies (58.2%, 57 of 98). Additional scores within the RSA literature included the Charlson Comorbidity Index (CCI) (35.3%, 6 of 17), the Charlson Comorbidity Index by Deyo et al. (J Clin Epidemiol. 45(6):613-9, 1992) (CCI-Deyo; 5.9%, 1 of 17), the Modified Charlson Comorbidity Index (modified-CCI) (5.9%, 1 of 17), the Elixhauser et al. (Med Care. 36(1):8-27, 1998) Comorbidity Measure (ECM) (11.8%, 2 of 17), and the Modified Frailty Index (mFI) (5.9%, 1 of 17). With the TSA literature, the additional comorbidity scores included the CCI (30.6%, 30 of 98), the CCI-Deyo (6.1%, 6 of 98), the modified-CCI (1.0%, 1 of 98), the ECM (8.2%, 8 of 98), the Factor-5 modified Frailty Index (mFI-5) (1.0%, 1 of 98), and the mFI (1.0%, 1 of 98).

CONCLUSION

The reporting of comorbidity indices is an important factor when considering patient outcomes and complications reported in shoulder arthroplasty literature. Although the reporting of these scores appears to be more prevalent in current literature, there is no standard or consistency in terms of which scores are reported. Given this diversity in comorbidity scores, further research is necessary to develop a single standardized score to properly analyze the effect of comorbidities on shoulder arthroplasty patient outcomes.

Risk factors for postoperative blood transfusion after shoulder arthroplasty

Purpose

To identify the effect of surgical indication, patient factors, and perioperative characteristics on transfusion after shoulder arthroplasty (SA).

Methods

Shoulder arthroplasties for osteoarthritis (OA) (N = 47), rotator cuff arthropathy (RCA) (N = 50), fracture (N = 76), revision (N = 66), and periprosthetic joint infection (PJI) (N = 35) performed at a single institution during a 6-year period were included. All other indications were excluded. Patient-based and surgical risk factors, including surgical indication, for postoperative allogeneic red blood cell transfusion were assessed with multivariate logistic regression analysis.

Results

A total of 274 SAs were included; transfusions were performed in 2% (2/97) of primary SAs for OA or RCA. Increased transfusion rates occurred in PJI (23%, p = 0.0006) and fracture (18%, p = 0.0018) cases. The mean preoperative hemoglobin (Hgb) was 12.2 ± 2.2 with PJI, 12.0 ± 2.1 with fracture, and 13.3 ± 1.6 g/dL for all other SAs. Independent risk factors for transfusion included lower preoperative hemoglobin (p < 0.001), PJI indication (p = 0.008), and fracture indication (p = 0.02), with no difference for fracture greater or less than 4 weeks old (p = 0.53).

Conclusion

Risk factors for allogeneic red blood cell transfusion after SA were low preoperative hemoglobin and procedures for PJI or fracture.Level of Evidence: Level III, retrospective case-control study.

Risk Factors for Blood Transfusions in Primary Anatomic and Reverse Total Shoulder Arthroplasty for Osteoarthritis

BACKGROUND

The purpose of this study was to determine risk factors for blood transfusion in primary anatomic and reverse total shoulder arthroplasty (TSA) performed for osteoarthritis.

METHODS

Patients who underwent anatomic or reverse TSA for a diagnosis of primary osteoarthritis were identified in a national surgical database from 2005 to 2018 by utilizing both CPT and ICD-9/ICD-10 codes. Univariate analysis was performed on the two transfused versus non-transfused cohorts to compare for differences in comorbidities and demographics. Independent risk factors for perioperative blood transfusions were identified via multivariate regression models.

RESULTS

305 transfused and 18,124 nontransfused patients were identified. Female sex (p<0.001), age >85 years (p=0.001), insulin-dependent diabetes mellitus (p=0.001), dialysis dependence (p=0.001), acute renal failure (p=0.012), hematologic disorders (p=0.010), disseminated cancer (p<0.001), ASA ≥ 3 (p<0.001), and functional dependence (p=0.001) were shown to be independent risk factors for blood transfusions on multivariate logistic regression analysis.

CONCLUSION

Several independent risk factors for blood transfusion following anatomic/reverse TSA for osteoarthritis were identified. Awareness of these risk factors can help surgeons and perioperative care teams to both identify and optimize high-risk patients to decrease both transfusion requirements and its associated complications in this patient population. Level of Evidence: III.

The Impact of Resident Involvement on Outcomes and Costs in Elective Hand and Upper Extremity Surgery

PURPOSE

The purpose of this study was to assess the impact of resident involvement on periprocedural outcomes and costs after common procedures performed at an academic hand surgical practice.

METHODS

A retrospective review was performed in all patients undergoing 7 common elective upper extremity procedures between January 2008 and December 2018: carpal tunnel release, distal radius open reduction and internal fixation (ORIF), trigger finger release, thumb carpometacarpal arthroplasty, phalanx closed reduction and percutaneous pinning, cubital tunnel release, and olecranon ORIF. The medical record was reviewed to determine the impact of surgical assistants (resident, fellow, or physician assistant) on periprocedural outcomes, periprocedural costs, and 1-year postoperative outcomes. The involvement of surgical trainees operating under direct supervision was compared with the entire operation performed by the attending surgeon with a physician assistant present.

RESULTS

A total of 396 procedures met the inclusion criteria. Analysis of the whole study sample revealed low rates of intraoperative complications, wound complications, medical complications, readmissions, and mortality. Subgroup analysis of carpal tunnel releases revealed significantly greater tourniquet times for residents compared with physician assistants (7 ± 2 min, 6 ± 1 min), as well as longer overall operating room times for residents compared to fellows or physician assistants (17 ± 5 min, 13 ± 3 min, 12 ± 3 min). Operating room times for distal radius ORIF were significantly greater among residents compared to fellows or physician assistants (68 ± 19 min, 57 ± 17 min, 56 ± 14 min). There were no differences in any other perioperative metrics or periprocedural costs for the trigger finger release or cubital tunnel release cohorts.

CONCLUSIONS

Resident involvement in select upper extremity procedures can lengthen operative times but does not have an impact on blood loss or operating room costs.

CLINICAL RELEVANCE

Surgeons should be aware that having a resident assistant slightly increases operative times in elective hand surgery.

Quantitative evaluation of the effects of interscalene block on physiological responses to the balance between nociception and anti-nociception among inpatients undergoing total shoulder arthroplasty under general anesthesia

Although the suppression of physiological responses to the balance between nociception caused by surgical trauma and anti-nociception due to anesthesia during total shoulder arthroplasty (TSA) is relevant for better perioperative managements, quantitative evaluations of the effects of ultrasound-guided interscalene brachial plexus block (ISB) on physiological responses have not been performed. Physiological responses were assessed using the nociceptive response (NR) index. In this multi-institutional observational study, associations between ISB and NR values were examined among inpatients undergoing TSA under general anesthesia between March 2019 and January 2021. The effects of ISB on acute postoperative pain and major complications within 30 days after surgery were also examined. NR values after skin incision clearly showed significant suppressions of physiological responses in patients undergoing TSA with ISB (n = 60), compared to those without ISB (n = 24). Acute postoperative pain on the day of surgery was also significantly less in patients with ISB than in those without ISB. Postoperative complications, classified by Clavien-Dindo grades, showed no significant differences between patients with and without ISB. A propensity score-matched sensitivity analysis confirmed the same results in patients with (n = 21) and without ISB (n = 21). In conclusion, suppression of physiological responses to the balance between nociception and anti-nociception by ISB can be quantitatively evaluated by NR index during TSA.

Tranexamic Acid for Shoulder Arthroplasty: A Systematic Review and Meta-Analysis

Tranexamic acid (TXA) is an antifibrinolytic agent that has been shown to decrease blood loss and transfusion rates after knee and hip arthroplasty, however with only limited evidence to support its use in shoulder arthroplasty. Therefore, we performed a systematic review and meta-analysis to evaluate the clinical usefulness of tranexamic acid for shoulder arthroplasty. A thorough literature search was conducted across four electronic databases (PubMed, Cochrane Library, Web of Science, Scopus) from inception through to 1 December 2021. The mean difference (MD), odds ratio (OR) or relative risk (RR) and 95% confidence interval (CI) were used to estimate pooled results from studies. Total of 10 studies comprising of 993 patients met the inclusion criteria and were included in the analysis. Blood volume loss in the TXA and non-TXA group was 0.66 ± 0.52 vs. 0.834 ± 0.592 L (MD= -0.15; 95%CI: -0.23 to -0.07; p < 0.001). Change of hemoglobin levels were 2.2 ± 1.0 for TXA group compared to 2.7 ± 1.1 for non-TXA group (MD= -0.51; 95%CI: -0.57 to -0.44; p < 0.001) and hematocrit change was 6.1 ± 2.7% vs. 7.9 ± 3.1%, respectively; (MD= -1.43; 95%CI: -2.27 to -0.59; p < 0.001). Tranexamic acid use for shoulder arthroplasty reduces blood volume loss during and after surgery and reduces drain output and hematocrit change.

Risk factors for complications and revision surgery after anatomic and reverse total shoulder arthroplasty

BACKGROUND

Complications and revisions following anatomic (aTSA) and reverse (rTSA) total shoulder arthroplasty have deleterious effects on patient function and satisfaction. The purpose of this study is to evaluate patient-specific, implant-specific and technique-specific risk factors for intraoperative complications, postoperative complications, and the occurrence of revisions after aTSA and rTSA.

METHODS

A total of 2964 aTSA and 5616 rTSA patients were enrolled in an international database of primary shoulder arthroplasty. Intra- and postoperative complications, as well as revisions, were reported and evaluated. Multivariate analyses were performed to quantify the risk factors associated with complications and revisions.

RESULTS

aTSA patients had a significantly higher complication rate (P = .0026) and a significantly higher revision rate (P < .0001) than rTSA patients, but aTSA patients also had a significantly longer average follow-up (P < .0001) than rTSA patients. No difference (P = .2712) in the intraoperative complication rate was observed between aTSA and rTSA patients. Regarding intraoperative complications, female sex (odds ratio [OR] 2.0, 95% confidence interval [CI] 1.17-3.68) and previous shoulder surgery (OR 2.9, 95% CI 1.73-4.90) were identified as significant risk factors. In regard to postoperative complications, younger age (OR 0.987, 95% CI 0.977-0.996), diagnosis of rheumatoid arthritis (OR 1.76, 95% 1.12-2.65), and previous shoulder surgery (OR 1.42, 95% CI 1.16-1.72) were noted to be risks factors. Finally, in regard to revision surgery, younger age (OR 0.964, 95% CI 0.933-0.998), more glenoid retroversion (OR 1.03, 95% CI 1.001-1.058), larger humeral stem size (OR 1.09, 95% CI 1.01-1.19), larger humeral liner thickness or offset (OR 1.50, 95% CI 1.18-1.96), larger glenosphere diameter (OR 1.16, 95% CI 1.07-1.26), and more intraoperative blood loss (OR 1.002, 95% CI 1.001-1.004) were noted to be risk factors.

CONCLUSIONS

Studying the impact of numerous patient- and implant-specific risk factors and determining their impact on complications and revision shoulder arthroplasty can assist surgeons in counseling patients and guide patient expectations following aTSA or rTSA. Care should be taken in patients with a history of previous shoulder surgery, who are at increased risk of both intra- and postoperative complications.

Tranexamic acid achieves less blood loss volume of in primary shoulder arthroplasty: a systematic review and meta-analysis of level I randomized controlled trials

Background

Tranexamic acid (TXA) reduces blood loss in knee and hip arthroplasty, but the effectiveness in shoulder arthroplasty is unknown. This study aimed to evaluate current level I randomized controlled trials examining the efficacy of TXA in primary shoulder arthroplasty.

Methods

A protocol for the study was designed and registered with PROSPERO (CRD42021230398). The PubMed, Embase, and Cochrane Library databases were searched using the following search strategy: "shoulder replacement" OR "shoulder arthroplasty" OR "reverse shoulder arthroplasty" AND "tranexamic acid." All randomized controlled trials were included in this study. The Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines was followed. Outcomes include blood loss, drain output, hemoglobin, thromboembolic complications, and blood transfusion.

Results

Five randomized controlled trials of 435 patients (219 patients in the TXA group and 216 patients in the non-TXA group) were included in the systematic review. The results indicated that the group using TXA had less total blood loss (MD, -249.56 mL; 95% confidence interval [CI] -347.60 to -151.52), less drainage output (MD, -113.72 mL; -155.92 to -71.52 95% CI), and less of a change in hemoglobin (MD, -0.68 g/dl; -0.94 to -0.42 g/dl 95% CI). No significant differences in blood transfusion (risk ratio 0.40; -0.11 to 1.45 95% CI) or thromboembolic events (risk ratio 0.13, 0.02 to 1.12 95% CI) were observed. Subgroup analyses showed that there was no significant difference in total blood loss, drainage output, or change in hemoglobin between single dose and multiple doses.

Conclusions

TXA in primary shoulder arthroplasty can reduce blood loss, drain output, and hemoglobin changes. Subgroup analysis showed that multiple TXA doses have similar results compared with single dose in primary shoulder arthroplasty. More randomized controlled trials comparing different administration routes of TXA in primary and revision shoulder arthroplasty are required.

Injection of Bone Marrow Aspirate for Glenohumeral Joint Osteoarthritis: A Pilot Randomized Control Trial

Purpose

To compare the efficacy of a single, intra-articular, nonconcentrated bone marrow aspirate (BMA) injection in comparison to cortisone for the treatment of glenohumeral joint osteoarthritis (GHJ OA).

Methods

Inclusion criteria were patients between the ages of 18 and 75 with a diagnosis of GHJ OA on radiograph. Patients were randomized to receive an ultrasound-guided, intra-articular cortisone injection or BMA injection (without concentration). The primary outcome measure was the Western Ontario Osteoarthritis of the Shoulder (WOOS) index at 12 months. Secondary outcome measures were the QuickDASH, EuroQOL 5-dimensions 5-level questionnaire (EQ-5D-5L) and visual analogue scale.

Results

The study included 25 shoulders of 22 patients who completed baseline and 12 months’ patient-reported outcome measures (12 shoulders received cortisone, 13 shoulders received BMA) after the study was terminated early by changes in Health Canada regulations. Baseline characteristics demonstrated a significant difference in the ages of the 2 groups, with the BMA group being older (61.6 vs 53.8 mean years, P = 0.021). For the BMA group, a significant improvement was seen in the WOOS index (P = 0.002), the QuickDASH (P < 0.001), and the EQ-5D-5L pain dimension (P = 0.004) between baseline and 12 months. No significant difference was seen for any outcome in the cortisone group between baseline and 12 months. No significant difference was demonstrated between changes in the WOOS scores from baseline to 12 months when compared between groups (P = 0.07). However, a significant difference in changes in scores was seen in the QuickDASH (P = 0.006) and the EQ-5D-5L pain scores (P = 0.003) and the EQ-5D-5L health scores (P = 0.032) in favor of BMA.

Conclusions

The results of this study demonstrate that patients with GHJ OA treated with BMA have superior changes in the QuickDASH and EQ-5D-5L pain and health scores but not in the WOOS outcomes measures at 12 months post injection when compared to patients treated with cortisone. However, because of the limited number of patients as a result of the early termination of the study, larger randomized studies are required to confirm these findings.

Level of Evidence

Level II, randomized controlled trial.

Is outpatient shoulder arthroplasty safe in patients aged ≥65 years? A comparison of readmissions and complications in inpatient and outpatient settings

BACKGROUND

Recent studies indicate that outpatient total shoulder arthroplasty (TSA) is cost-effective and may have a low complication rate similar to inpatient TSA. However, existing studies have included younger patient cohorts who typically possess fewer medical comorbidities. Patients aged ≥65 years are commonly enrolled in Medicare, which has traditionally designated TSA as an inpatient-only procedure. The purpose of this study was to compare surgical complication rates and 90-day readmission rates between inpatient and outpatient TSA performed in adults aged ≥65 years.

METHODS

Medical records for all patients aged ≥65 years who underwent primary anatomic or reverse TSA by a single surgeon from July 2015 to May 2020 were reviewed. Patients were preselected for outpatient or inpatient surgery based on lack of significant cardiopulmonary comorbidities and patient preference. Demographics, body mass index (BMI), and American Society of Anesthesiologists (ASA) scores were collected in addition to emergency department (ED) visits and readmissions within 90 days of the index surgery. Relationships among frequency and types of complications and surgical setting (inpatients vs. outpatient) were assessed. Complication rates and demographic variables between inpatient and outpatient procedures were compared. Logistic regressions were performed to account for interacting predictor variables on the odds of having complications.

RESULTS

A total of 145 shoulders (138 patients; 95 male, 43 female) were included in the analysis, of which 98 received inpatient TSA and 47 received outpatient TSA. Average age was 75.5 ± 7.2 for inpatient TSA and 70.5 ± 4.5 for outpatient TSA (P < .001). Patient age (P < .001), ASA score ≥3 (P < .001), and reverse TSA (P = .002) were significantly positively correlated with receiving inpatient surgery. There were 16 complications (16.3%) in the inpatient group and 9 complications (19.1%) in the outpatient group (P = .648). There were no significant differences in the frequency of postoperative complications, return to the ED, or reoperations between inpatient and outpatient procedures (P > .05). Each 1-year increase in age increased the predicted odds of having a surgical complication by 14% (odds ratio = 1.14; P = .021), irrespective of surgical setting. Those who underwent inpatient TSA had a significantly higher frequency of 90-day readmission (inpatient=16, outpatient=1; P = .034).

CONCLUSIONS

Postoperative complications and ED returns were not significantly different between inpatient and outpatient TSA. Each 1-year increase in age increased the odds of postoperative surgical complications by 14%, regardless of surgical setting. Outpatient TSA was found to be safe for appropriately selected patients aged ≥65 years, and re-evaluation of TSA as an inpatient-only procedure should be considered.

Day case shoulder arthroplasty: needed now more than ever

The demand for total shoulder arthroplasty has grown over the years and is set to continue in a similar trend because of the ageing population. Following a global reduction in elective orthopaedic treatment and an exponential rise in surgical waiting times, innovative strategies are desperately needed to mitigate against the harmful effects of delaying vital operations on both patients and the wider society. Day case shoulder arthroplasty is a safe alternative to a traditional inpatient approach, with evidence supporting substantial cost savings, improved outcomes and fewer complications. Rigorous patient selection and a multidisciplinary team approach are paramount when adopting a day case service to deliver joint replacement surgery. This review outlines the principles of day case total shoulder arthroplasty and highlights key considerations when transitioning to this approach.

Complication rates and outcomes after outpatient shoulder arthroplasty: a systematic review

Background

As the number of total shoulder arthroplasties (TSAs) performed annually increases, some surgeons have begun to shift toward performing TSAs in the outpatient setting. However, it is imperative to establish the safety of outpatient TSA. The purpose of this systematic review was to define complication, readmission, and reoperation rates and patient-reported outcomes after outpatient TSA.

Methods

A systematic review of the literature was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines using three databases (PubMed, Ovid, and Embase). English-language publications describing results on complication rates in patients who underwent TSA in an outpatient or ambulatory setting were included. All nonclinical and deidentified database studies were excluded. Bias assessment was conducted with the methodologic index for nonrandomized studies criteria.

Results

Seven studies describing outcomes in outpatient TSA were identified for inclusion. The included studies used varying criteria for selecting patients for an outpatient procedure. The total outpatient 90-day complication rate (commonly including hematomas, wound issues, and nerve palsies) ranged from 7.1%-11.5%. Readmission rates ranged from 0%-3.7%, and emergency and urgent care visits ranged from 2.4%-16.1%. Patient-reported outcomes improved significantly after outpatient TSA in all studies. Two studies found a higher complication rate in the comparative inpatient cohort (P = .023-.027). Methodologic index for nonrandomized studies scores ranged from 9 to 11 (of 16) for noncomparative studies (n = 3), while all comparative studies received a score of a 16 (of 24).

Conclusion

Outpatient TSA in properly selected patients results in a similar complication rate to inpatient TSA. Further studies are needed to aid in determining proper risk stratification to direct patients to inpatient or outpatient shoulder arthroplasty.

The effect of operative time on early postoperative complications in total shoulder arthroplasty: An analysis of the ACS-NSQIP database

BACKGROUND

Total shoulder arthroplasty has been demonstrated to be an effective treatment for arthritis of the glenohumeral joint. Prior studies have identified longer operative times as a risk factor for complications after numerous types of procedures. We hypothesized that increased operative time, in 20-min intervals, would be associated with complications following total shoulder arthroplasty.

METHODS

Patients undergoing total shoulder arthroplasty from 2006 to 2015 were identified from the ACS-NSQIP database. Patient demographic information, perioperative parameters, and 30-day outcomes were retrieved. Pearson's Chi-square test and multivariate Poisson regression with robust error variance were used to analyze the relationship of operative time and outcomes.

RESULTS

A total of 10,082 patients were included. Multivariate analysis revealed that for each increase in 20 min of operative time, there were significantly increased rates of any complication (relative risk (RR) 1.24, 95% confidence interval (CI) 1.19-1.26), anemia requiring transfusion (RR 1.33, 95%CI 1.26-1.4), peripheral nerve injury (RR 1.88, 95%CI 1.53-2.31), and urinary tract infection (RR 1.24, 95%CI 1.09-1.41).

DISCUSSION

This study indicates that increasing operative time confers increased risk for postoperative complications following total shoulder arthroplasty. We anticipate the results of this manuscript will be used for provider education, policy decision-making, and potentially to derive algorithms that can improve safety and efficiency in total shoulder arthroplasty.

LEVEL OF EVIDENCE

III.

Inconclusive evidence for the efficacy of tranexamic acid in reducing transfusions, postoperative infection or hematoma formation after primary shoulder arthroplasty: A meta-analysis with trial sequential analysis

BACKGROUND

Tranexamic acid efficacy on clinically relevant adverse outcomes in patients undergoing shoulder arthroplasty has been contradictory. The aim of this review was to analyze whether tranexamic acid administration could decrease transfusions, infection and hematoma formation in patients undergoing shoulder arthroplasty.

METHODS

PubMed, EMBASE, and the Cochrane Library were searched up to May 2019 for randomized controlled trials comparing tranexamic acid to placebo in shoulder arthroplasty. Random-effect models were performed to meta-analyze the evidence. Trial sequential analysis was used to calculate and to establish the conclusiveness of the evidence derived from the meta-analysis.

RESULTS

Four randomized controlled trials comprising 375 patients were included. Meta-analysis showed no effect of tranexamic acid on transfusion rate (RR = 0.48 (adjusted 95% CI 0.05 to 3.85)). The possible effect of tranexamic acid on hematoma formation or infection rates after shoulder arthroplasty is non-estimable with the current evidence. The sample size necessary to reliably determine if tranexamic acid decreases transfusions, infection rates and hematoma formation is not available from the current literature as determined by the trial sequential analysis.

DISCUSSION

While tranexamic acid has proven its efficacy in decreasing blood loss in shoulder arthroplasty, this meta-analysis of randomized controlled trials clarifies that there is currently no conclusive evidence for a positive effect of tranexamic acid upon transfusion rate, infection rates or hematoma formation in patients undergoing primary shoulder arthroplasty.

The Impact of Preoperative Anemia on Complications After Total Shoulder Arthroplasty

This study investigated the relationship between varying levels of preoperative anemia and postoperative complications within 30 days of total shoulder arthroplasty (TSA).

Tranexamic acid use is associated with lower transfusion rates in shoulder arthroplasty patients with preoperative anaemia

BACKGROUND

We evaluate tranexamic acid use in high-risk shoulder arthroplasty patients, hypothesizing that tranexamic acid will decrease transfusion rates in patients with low preoperative haematocrit.

METHODS

A retrospective review of shoulder arthroplasty patients with preoperative anaemia compared those treated with and without perioperative tranexamic acid. Inclusion criterion was any shoulder arthroplasty with a preoperative haematocrit (Hct) <38%. Tranexamic acid was given generally as 1 g intravenously before incision and 1 g during wound closure; topical tranexamic acid was used in cases of contraindication to IV tranexamic acid. Preoperative Hct, postoperative Hct, estimated blood loss, preoperative anticoagulation use, American Society of Anesthesiologist score, transfusion rate and demographic data were compared between groups with and without tranexamic acid.

RESULTS

Of the 435 arthroplasties performed, 109 patients had preoperative Hct < 38% (haemoglobin of 12.7 g/dL); 69 had tranexamic acid perioperatively and 40 did not. Demographics, anticoagulation use, diagnosis, arthroplasty types, estimated blood loss and preoperative Hct were similar between groups. The tranexamic acid group had a higher postoperative Hct, significantly lower transfusion rate and significantly smaller drop in Hct. Hct levels, Hct change and transfusion rate for topical versus intravenous tranexamic acid were not significantly different.

DISCUSSION

Perioperative tranexamic acid in high-risk shoulder arthroplasty patients with preoperative Hct <38% is associated with higher postoperative Hct and lower transfusion rates.

Duration of Surgery and Learning Curve Affect Rotator Cuff Repair Retear Rates: A Post Hoc Analysis of 1600 Cases

BACKGROUND

Arthroscopic rotator cuff repair can be quite complex and time consuming, particularly early in the surgeon's learning curve.

HYPOTHESIS

Patients who have undergone rotator cuff repair with shorter operative times will be less likely to have a rotator cuff retear at 6 months postoperatively.

STUDY DESIGN

Case-control study; Level of evidence, 3.

METHODS

This study was an analysis of data from 1600 consecutive patients (670 partial-thickness and 930 full-thickness tears) who had rotator cuff repair performed by a single surgeon utilizing an arthroscopic, single-row, knotless inverted mattress suture anchor technique. All patients underwent ultrasound at 6 months postoperatively to determine repair integrity. Moving average analysis was performed for the variables of operative time and case number to evaluate the surgeon's learning curve.

RESULTS

For early cases, the mean operative time was approximately 35 minutes. After approximately 450 cases, the operative time plateaued at approximately 20 minutes. The mean operative time for the cohort (±SEM) was 22 ± 0.3 minutes, and the mean retear rate was 13%. Increased operative time was associated with a retear (r = 0.18; P < .001). Multiple logistic regression analysis revealed that the variables with the most independent effect on retears were larger tear size (Wald statistic = 36; P < .001), lower case number (ie, less surgeon experience) (Wald statistic = 28; P < .001), older patient age (Wald statistic = 23; P < .001), full-thickness tears (Wald statistic = 13; P < .001), and lower surgeon-rated repair quality (Wald statistic = 8; P = .004). Operative time was not a significant independent factor contributing to retears.

CONCLUSION

Operative time and rotator cuff retear rates decreased as surgical team experience increased. The hypothesis of this study, however, was not supported. The reduced retear rate was not related to a reduction in operative time per se but rather to improved surgical team experience and patient factors, such as improved healing with smaller tears in younger patients.

Acute surgical management of proximal humerus fractures: ORIF vs. hemiarthroplasty vs. reverse shoulder arthroplasty

BACKGROUND

Proximal humerus fracture treatment varies by surgeon preference and patient factors. This study compares patient and fracture characteristics, with outcomes between current surgical treatment options.

METHODS

Between 1999 and 2018, 425 proximal humerus fractures underwent acute surgical management: open reduction internal fixation (ORIF, n = 211), hemiarthroplasty (HA, n = 108), or reverse shoulder arthroplasty (RSA, n = 106). Patient and fracture characteristics included age, American Society of Anesthesiologists physical status classification (ASA), and fracture classification. Postoperative motion at 3, 6, and minimum 12 months (avg 20 ± 21 months), radiographic outcomes, and postoperative falls were analyzed.

RESULTS

Average age for treatment groups was 65 ± 13 years (range: 18-93 years). Fractures were classified as 2- (11%), 3- (41%), or 4-part (48%). Age, ASA, and fracture classification were associated with selected surgical management (P < .0001, =.001, <.0001, respectively). Outcomes showed a significant improvement in forward flexion from 3 months to 6 months in all groups (P < .0001). No difference in final motion was seen between groups. Radiographic union was higher in ORIF (89%), and similar between HA (79%) and RSA (77%, P = .005). Rate of reoperation was RSA 6.6%, ORIF 17.5%, and hemiarthroplasty 15.7% (P = .029). Postoperatively, 23% patients had at least 1 fall, of which 73% resulted in fractures.

CONCLUSION

Older patients with high ASA were treated with arthroplasty, and younger patients with lower ASA were treated with ORIF. All groups showed improvements in motion. At minimum 1 year of follow-up, there was no difference in motion between groups. ORIF and HA showed significantly more reoperations compared with RSA. Patients should be counseled about reoperation, fall risk, and prevention.

Cost analysis and complication profile of primary shoulder arthroplasty at a high-volume institution

BACKGROUND

Paralleling the increased utilization of shoulder arthroplasty, bundled-payment reimbursement is becoming increasingly common. An understanding of the costs of each element of care and detailed information on the frequency of and reasons for readmission and reoperation are keys to developing bundled-payment initiatives. The purpose of this study was to perform a comprehensive analysis of complications, readmission rates, and costs of primary shoulder arthroplasty at a high-volume institution.

METHODS

Between 2012 and 2016, 2 shoulder surgeons from a single institution performed 1794 consecutive primary shoulder arthroplasties: 636 anatomic total shoulder arthroplasties (TSAs), 1081 reverse shoulder arthroplasties (RSAs), and 77 hemiarthroplasties. A cost analysis was designed to include a period of 60 days preoperatively, the index surgical hospitalization, and 90 days postoperatively, including costs of any readmission or reoperation.

RESULTS

The 90-day complication, reoperation, and readmission rates were 2.3%, 0.6%, and 1.8%, respectively. The 90-day readmission risk was higher among patients with an American Society of Anesthesiologists score of 3 or greater; a 1-unit increase in the American Society of Anesthesiologists score was associated with a $429 increase in index cost. Of the hospital readmissions, 10 were directly related to the index arthroplasty whereas 21 were not. The median standardized costs were as follows: preoperative evaluation, $481; index surgical hospitalization, $15,758; and postoperative care, $183. The median standardized costs for index surgical hospitalization were different for each procedure: TSA, $14,010; RSA, $16,741; and hemiarthroplasty, $12,709.

CONCLUSION

In this study, primary shoulder arthroplasty was associated with low 90-day reoperation and complication rates. The median standardized costs inclusive of preoperative workup and 90-day postoperative recovery were $14,675 and $17,407 for TSA and RSA, respectively.

Effect of tranexamic acid on blood loss after reverse total shoulder arthroplasty according to the administration method: a prospective, multicenter, randomized, controlled study

BACKGROUND

The ideal method of administering tranexamic acid (TXA) for reverse total shoulder arthroplasty (RTSA) remains unknown. We aimed to evaluate TXA efficacy according to 3 administration methods after RTSA.

METHODS

Overall, 102 patients who underwent RTSA using a single implant between September 2016 and November 2018 were randomized to the following groups according to the TXA administration method: intravenous (n = 34; 1 g + 0.9% normal saline 100 mL), topical (n = 33; 2 g + 0.9% normal saline 50 mL), and combined groups (n = 34). Patients were enrolled in 4 tertial referral hospitals for prospective multicenter studies. The primary outcome was a hemoglobin decrease in 24 hours postoperatively; secondary outcomes were total drain volume, transfusion rate, and calculated total blood loss.

RESULTS

Demographic data, including preoperative hemoglobin levels, were not different among the 3 groups, but the average age was higher in the combined group (P = .038). Hemoglobin decrease (1.8 ± 1.1 vs. 1.8 ± 1.0 vs. 2.0 ± 1.1 g/dL, P = .769), total drain volume (209.2 ± 147.6 vs. 167.2 ± 102.0 vs. 166.0 ± 118.7, P = .270), and total blood loss (701.1 ± 352.3 vs. 656.5 ± 285.6 vs. 699.0 ± 248.7 mL, P = .810) were not significantly different among the 3 groups (all P > .05). The transfusion rate was higher in the intravenous group (n = 4), whereas only 1 patient had transfusion in the topical group and none in the combined group, although the difference was not statistically significant (P = .084).

CONCLUSION

Blood loss did not differ among TXA administration methods after RTSA. However, considering the risk of complication in intravenous TXA, topical TXA after RTSA may be safer, even for patients with normal risk for venous thromboembolic complication.

Is surgical duration associated with postoperative complications in primary shoulder arthroplasty?

BACKGROUND

Surgical duration is an independent predictor of short-term adverse outcomes after a variety of orthopedic procedures, both arthroscopic and open. However, this association in shoulder arthroplasty remains unclear. The purpose of this study was to identify the association between surgical duration and postoperative complications, as well as increased use of health care resources, after shoulder arthroplasty.

METHODS

Primary shoulder arthroplasty procedures performed from 2005 to 2016 were identified in the American College of Surgeons National Surgical Quality Improvement Program database using Current Procedural Terminology codes. Surgical duration was divided into 3 cohorts: (1) surgical procedures lasting less than 90 minutes, (2) those lasting between 90 and 120 minutes, and (3) those lasting more than 120 minutes. Baseline patient characteristics and outcome variables were compared using bivariate analysis. Outcome variables were compared using multivariate analysis.

RESULTS

Overall, 14,106 patients were identified. Longer surgical duration was significantly associated with younger age, male patients, higher body mass index, and use of general anesthesia, (P < .001 for each), as well as smoking history (P < .39). Relative to operative times shorter than 90 minutes, surgical procedures lasting more than 120 minutes had higher rates of any complication (P = .002), return to the operating room (P = .008), urinary tract infection (P = .02), non-home discharge (P < .001), blood transfusion (P < .001), and unplanned 30-day hospital readmission (P = .03).

CONCLUSION

Increasing surgical duration was associated with a variety of postoperative medical complications and increased use of health care resources including discharge to acute care facilities, blood transfusions, and hospital readmission. These data suggest that surgical duration should be considered for postoperative risk stratification, as well as patient counseling, and may be a surgeon-modifiable risk factor independent of patient risk factors.

Demographic and clinical factors associated with same-day discharge and unplanned readmission following shoulder arthroplasty: a retrospective cohort study

Background

Same-day discharge, defined as discharge from the hospital within 24 h of surgery, has been shown to be safe for joint arthroplasty. We examined demographic and clinical factors associated with same-day discharge and unplanned readmission following shoulder arthroplasty in adult patients.

Methods

Utilizing data from the American College of Surgeons National Surgical Quality Improvement Program database, we extracted information of all patients that underwent shoulder arthroplasty. The primary and secondary outcome of interest was same-day discharge and 30-day unplanned readmission, respectively. We utilized multivariable logistic regression to identify covariates associated with these outcomes.

Results

There were 17,011 patients analyzed when identifying predictors for same-day discharge. There was an increase in same-day discharge from 2007 to 2016. The odds of same-day discharge were significantly better for males (P < 0.001). The odds of same-day discharge was significantly decreased for every 10-year increase in age and for patients with insulin dependent diabetes, poor functional status, chronic obstructive pulmonary disease, congestive heart failure (CHF), bleeding disorder, and comorbidity burden (all P < 0.001). There were 14,276 patients analyzed for hospital readmission. The odds of unplanned readmission were significantly higher for every 10-year increase in age and for patients with poor functional status, CHF, bleeding disorder, and higher comorbidity burden (all P < 0.005).

Conclusions

The results of this study show that preoperative comorbidities and advanced age reduce the odds of same-day discharge. Risk stratification, preoperative optimization, and coordinated care after surgery may be helpful to optimize patients for same-day discharge.

Quantifying the Opportunity Cost of Resident Involvement in Academic Orthopaedic Sports Medicine: A Matched-Pair Analysis

PURPOSE

To quantify the cost of resident involvement in academic sports medicine by examining differences in operative time, relative value units (RVUs) per case, and RVUs per hour between attending-only cases and cases with resident involvement.

METHODS

A retrospective analysis of common sports medicine procedures identified by Current Procedural Terminology code was performed using data from the American College of Surgeons National Surgical Quality Improvement Program database from 2006 to 2015. Matched cohorts were generated based on demographic variables, comorbidities, preoperative laboratory values, and surgical procedures. Bivariate analysis examined mean differences in operative time, RVUs per case, and RVUs per hour between attending-only cases and cases with resident involvement. A cost analysis was performed to quantify differences in RVUs generated per hour in terms of dollars per case.

RESULTS

A total of 14,840 attending-only cases and 2,230 resident-involved cases were used to generate 2 matched cohorts (N = 4,460). Resident cases had greater mean operative times than attending-only cases, with operative time increasing as residents became more senior (P < .01). Residents participated in cases with larger mean RVUs per case (P < .01). Cases with lone attendings showed greater RVUs per hour (P < .01). The cost of resident involvement increased nearly 8-fold from postgraduate year 1 to postgraduate year 6 residents ($25.70 vs $200.07).

CONCLUSIONS

In academic sports medicine, the involvement of resident physicians increases operative time. The associated decrease in attending physician efficiency in RVUs per hour equates to an average cost per case of $159.18, with costs increasing as residents become more senior.

LEVEL OF EVIDENCE

Level III, retrospective comparative trial.

Sex differences in complications and readmission rates following shoulder arthroplasty in the United States

Introduction

Shoulder arthroplasty (SA) procedures are increasingly performed in the United States. However, there is a lack of data evaluating how patient sex may affect perioperative complications. The purpose of this study was to evaluate sex-based differences in 30-day postoperative complication and readmission rates after SA.

Methods

Total SA and reverse SA cases between 2012-2016 were identified from the American College of Surgeons National Surgical Quality Improvement Program database. The 30-day complication rate, readmission rate, operation time, length of stay, and mortality were compared between women and men. Multivariable logistic regression analysis was performed to identify independent perioperative complications associated with patient sex.

Results

Of 12,530 SA cases, 6949 (55.4%) were female and 5499 (44.5%) were male. Compared with women, on average men were significantly younger, had lower body mass index, and were less likely to be functionally dependent, and less likely to have an American Society of Anesthesiologists score of 3+ (P < .001). Although overall complications and readmission rates between women and men were similar (3.4% vs. 3.7%, P = .489; 3.0% vs. 2.8%, P = .497), men were significantly less likely to develop urinary tract infections (UTIs; odds ratio [OR] 0.58, P = .032) and require transfusions (OR 0.49, P < .001) and had shorter lengths of stay (P < .001). However, men were significantly more likely to have a superficial surgical site infection (OR 2.63, P = .035) and 6.8 minute longer operating time (P < .001) compared with women.

Conclusion

Though the overall complication risk is similar between the sexes, their risk profiles are distinct. Men had decreased risk of UTI, blood transfusions, and shorter length of stay but increased risk of surgical site and longer operating time compared with women. This disparity should be discussed when counseling and risk-stratifying patients for SA.

Modified frailty index predicts medical complications, length of stay, readmission, and mortality following total shoulder arthroplasty

HYPOTHESIS

The purpose of this study was to evaluate the 5-factor modified frailty index (mFI-5) as a predictor of postoperative complications in patients undergoing total shoulder arthroplasty (TSA).

METHODS

We conducted a retrospective analysis of the National Surgical Quality Improvement Program database for patients undergoing TSA between the years 2005 and 2017. The mFI-5 score, which includes the presence of comorbid diabetes, hypertension, congestive heart failure, chronic obstructive pulmonary disease, and functional status, was calculated for each patient. Multivariate logistic regression models were used to assess the relationship between the mFI-5 and postoperative complications.

RESULTS

A total of 18,957 patients undergoing TSA were identified. The mFI-5 was a strong predictor of serious medical complications (cardiac arrest, myocardial infarction, septic shock, pulmonary embolism, postoperative dialysis, reintubation, and prolonged ventilator requirement), discharge to a facility, and readmission (odds ratio ≥ 1.309, P ≤ .001). Length of stay also increased as the mFI-5 score increased (P < .001). However, among all the measured complications, the mFI-5 was the strongest predictor of mortality, with the risk more than doubling for each point increase in the mFI-5 score (odds ratio, 2.113; 95% confidence interval, 1.447-3.086; P < .001).

CONCLUSION

The mFI-5 predicts serious medical complications, increased length of stay, discharge to a facility, hospital readmission, and mortality in patients undergoing TSA. All of the variables within the mFI-5 are easily obtained through the patient history, allowing for a practical clinical tool that hospitals and surgeons can use to identify high-risk surgical candidates, inform preoperative counseling, and guide perioperative care to optimize patient outcomes.

Risk factors for venous thromboembolism in total shoulder arthroplasty

BACKGROUND

Although venous thromboembolism (VTE) has been studied in lower-extremity arthroplasty, there are few guidelines regarding established risk factors for VTE in total shoulder arthroplasty (TSA). With literature suggesting the VTE rate may be as high as 13%, VTE prevention and risk factors should be considered in preoperative planning.

METHODS

All TSAs from 2011 through 2016 were queried from the National Surgical Quality Improvement Program database. Age, sex, body mass index, American Society of Anesthesiologists class, ethnicity, functional status, comorbidities, discharge destination, surgical indication, length of stay, and operative time were compared between patients with and without 30-day postoperative VTE. Pearson χ2 and t tests were used to assess baseline categorical and continuous variables, respectively. Multivariate logistic regression analysis was conducted to determine associated independent risk factors for VTE.

RESULTS

The analysis included 13,299 patients; VTE developed in 83 patients (0.62%). Patients with VTE were older (72 years vs. 69 years) and had a longer hospital stay (3.5 days vs. 1.9 days). Compared with patients with no VTE, patients with VTE were more likely to undergo TSA for proximal humeral fractures, to be discharged to a rehabilitative center, to have a preoperative albumin level lower than 3.5 g/dL, to undergo non-elective surgery, to have an American Society of Anesthesiologists class of 3 or greater, to have a surgical-site infection develop, and ultimately to need a shoulder reoperation (all P < .05). Multivariate logistic regression analysis revealed that hypoalbuminemia (albumin level < 3.5 g/dL), an increased length of stay, and African American ethnicity were independent risk factors for VTE development.

CONCLUSION

Patients with hypoalbuminemia, an increased length of stay, and African American ethnicity are at an increased risk of VTE after shoulder arthroplasty. A high index of suspicion is warranted for elderly patients with fractures who may need preoperative medical optimization.

Hematologic profile in reverse total shoulder arthroplasty: perioperative and postoperative blood loss

BACKGROUND

Few studies have investigated the amount of blood loss during reverse total shoulder arthroplasty (RTSA). The purpose of this study was to investigate blood loss in patients who underwent RTSA for massive irreparable rotator cuff tear (MIRCT) using the hemoglobin (Hb) balance method and total Hemovac amount and to identify predictors of blood transfusion in these patients.

METHODS

We retrospectively reviewed 121 patients who underwent RTSA for MIRCT. The mean age was 71.2 ± 6.9 years, and 75 were women. Age, sex, body mass index, use of anticoagulants, American Society of Anesthesiologists physical status score, comorbidities (eg, hypertension, diabetes mellitus, cerebrovascular accident), preoperative Hb level, preoperative hematocrit level, preoperative prothrombin time/international normalized ratio, use of cement, and operative time were evaluated as values predicting blood transfusion.

RESULTS

The overall blood loss was 846.6 ± 527.6 mL, which included 346 ± 231.2 mL of intraoperative blood loss and 500.3 ± 196.4 mL of postoperative blood loss. Values predicting blood transfusion were a lower preoperative Hb level (P < .001), hematocrit level (P < .001), hypertension (P = .018), and cerebrovascular accident (P = .008). Receiver operating characteristic analysis identified the following cutoff values for predicting transfusion: preoperative Hb level of 13.5 g/dL (90.3% sensitivity) and hematocrit of 40% (90.3% sensitivity).

CONCLUSIONS

RTSA for MIRCT is associated with blood loss during and after surgery. The amount of blood loss should be noted, and blood transfusion could be predicted by calculating the blood loss and predictive values. Lower preoperative Hb level, hematocrit, hypertension, and cerebrovascular accident are predictors of blood transfusion. Blood transfusion should be considered if a patient with preoperative Hb level <13.5 g/dL and hematocrit <40% has a history of hypertension or cerebrovascular accident.

Modified frailty index is an effective risk-stratification tool for patients undergoing total shoulder arthroplasty

BACKGROUND

Frailty, as quantified by the modified frailty index (mFI), has emerged as a promising method to identify patients at high risk of complications after surgery. Several studies have shown that frailty, as opposed to age, is more predictive of adverse surgical outcomes. We hypothesized that a 5-item mFI could be used to identify patients at elevated risk of complications after total shoulder arthroplasty (TSA).

METHODS

We identified patients aged 50 years or older who underwent TSA in the American College of Surgeons National Surgical Quality Improvement Program database. Pearson χ² analysis and linear regression were used to determine the association of the mFI score with 30-day postoperative complications, reoperation, readmission, length of stay (LOS), adverse hospital discharge, and mortality rate.

RESULTS

The study included 9861 patients with a mean age of 70 years. As the mFI score increased from 0 to 2 or greater, the following rates increased: postoperative complications from 4.2% to 9.4%, readmission from 1.6% to 4.4%, adverse hospital discharge from 6.3% to 19.6%, and LOS from 1.88 days to 2.43 days (P < .001). Multivariate analysis showed that patients with an mFI score of 2 or greater were over twice as likely to sustain a postoperative complication (odds ratio [OR], 2.4; 95% confidence interval [CI], 1.86-3.10), readmission (OR, 2.80; 95% CI, 1.88-4.17), reoperation (OR, 1.82; 95% CI, 1.02-3.25), and adverse hospital discharge (OR, 3.14; 95% CI, 2.51-3.92). These effects were all significantly higher compared with age.

CONCLUSION

Frailty is associated with increased rates of 30-day postoperative complications, readmission, reoperation, adverse hospital discharge, and hospital LOS after TSA. Use of a simple frailty evaluation may help inform decision making and risk assessment when considering TSA.