shoulder arthritis

What Specific Activities are Patients Performing Two Years After Primary Reverse Total Shoulder Arthroplasty?

Authors

Christopher M. Brusalis, MD, Alexander E. White, MD, Anthony Finocchiaro, BS, David M. Dines, MD, Joshua S. Dines, MD, Andreas Kontaxis, PhD, Samuel A. Taylor, MD, Lawrence V. Gulotta, MD, Michael C. Fu, MD, MHS

Journal

Seminars in Arthroplasty: JSES. 2023 February 3.

Abstract

Background

Returning patients to their usual activities following reverse total shoulder arthroplasty (RSA) is a critical component of achieving high patient satisfaction. As indications for RSA expand, patients’ desired and achieved activities remains inadequately characterized. We hypothesized that the vast majority of patients undergoing RSA returned to performing desired functional and recreational activities by two years postoperatively, with relatively lower rates of performing activities that involve internal rotation.

Methods

A shoulder arthroplasty registry at a tertiary care orthopedic hospital was reviewed retrospectively to identify specific patient activity capabilities at a minimum of two years postoperatively. Individual items within the American Shoulder and Elbow Surgeons (ASES) Shoulder Score and Shoulder Activity Scale (SAS) pertaining to activity levels were reviewed, including free text responses regarding usual work and usual sporting activity.

Results

The study cohort consisted of 238 patients (mean age = 71 ± 8 years, 61% female). Surgical indications consisted of osteoarthritis (69%, n = 164), and rotator cuff arthropathy (31%, n = 74). Median two-year postoperative ASES score for the operative extremity was 85 ± 18. Patients identified household chores (50%, n = 123), desk-related work (16%, n = 39), and heavy lifting activities (3%, n = 7) as the most common forms of usual work. Among 157 patients participating in sports at two years postoperatively, walking (27%, n = 42), golf (23%, n = 36), swimming (19%, n = 30), and weightlifting (15%, n = 24) were the most common sporting activities. At two-year follow-up, a high proportion of patients were able to comb their hair (90%, n = 215), manage toileting (89%, n = 213), and put on a coat (92%, n = 219). A relatively lower proportion of patients reported being able to lift ten pounds overhead (63%, n = 150) or wash their back (59%, n = 140).

Conclusion

Following RSA, patients exhibit a variety of desired functional and recreational activities. There persists a wide spectrum in patients’ capabilities to perform activities at two years postoperatively. The study findings may provide data to guide preoperative patient counseling.


About the Author

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS) in New York City (NYC) and New Jersey (NJ), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.


Development of Supervised Machine Learning Algorithms for Prediction of Satisfaction at Two Years Following Total Shoulder Arthroplasty

Authors

Evan M. Polce, BS, Kyle N. Kunze, MD, Michael Fu, MD, Grant E. Garrigues, MD, Brian Forsythe, MD, Gregory P. Nicholson, MD, Brian J. Cole, MD MBA, Nikhil N. Verma, MD

Journal

Journal of Shoulder and Elbow Surgery. 2020 Sep 30. DOI:https://doi.org/10.1016/j.jse.2020.09.007.

Abstract

Background

Patient satisfaction after primary anatomic and reverse total shoulder arthroplasty (TSA) represents an important metric for gauging patient perception of their care and surgical outcome. Although TSA confers improvement in pain and function for most patients, inevitably some will remain unsatisfied postoperatively. The purpose of the present study was to (1) train supervised machine learning (SML) algorithms to predict satisfaction after TSA and (2) develop a clinical tool for individualized assessment of patient-specific risk factors.

Methods

A retrospective review of primary anatomic and reverse TSA patients between January 2014 and February 2018 was performed. A total of 16 demographic, clinical, and patient-reported outcomes were evaluated for predictive value. Five SML algorithms underwent three iterations of 10-fold cross-validation on a training set (80% of cohort). Assessment by discrimination, calibration, Brier score, and decision curve analysis was performed on an independent testing set (remaining 20% of cohort). Global and local model behavior were evaluated with global variable importance plots and local interpretable model-agnostic explanation, respectively.

Results

The study cohort consisted of 413 patients, of which 331 (82.6%) were satisfied at two-years postoperatively. The support vector machine (SVM) model demonstrated the best relative performance on the independent testing set not used for model training (c-statistic=0.80, calibration intercept=0.20, calibration slope=2.32, Brier score=0.11). The most important factors for predicting satisfaction were baseline single assessment numeric evaluation (SANE) score, exercise and activity, workers compensation status, diagnosis, symptom duration prior to surgery, body mass index, age, smoking status, anatomic vs. reverse TSA, and diabetes. The SVM algorithm was incorporated into an open-access digital application for patient-level explanations of risk and predictions available here: https://orthopedics.shinyapps.io/SatisfactionTSA/

Conclusion

The best performing SML model demonstrated excellent discrimination and adequate calibration for predicting satisfaction following TSA and was used to create an open-access, clinical-decision making tool. However, rigorous external validation in different geographic locations and patient populations is essential prior to assessment of clinical utility. Given that this tool is based on partially modifiable risk factors it may enhance shared decision making and allow for periods of targeted, preoperative health optimization efforts.

Keywords

Total shoulder arthroplasty, satisfaction, classification, feature selection, cross-validation, supervised machine learning (SML), support vector machine (SVM)


About the Author

Michael Fu Head Shot (1).jpg

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.


PROMIS Physical Function Underperforms Psychometrically Relative to American Shoulder and Elbow Surgeons Score in Patients Undergoing Anatomic Total Shoulder Arthroplasty

Authors

Michael C. Fu, MD, MHS, Brenda Chang, MS, MPH, Alexandra C. Wong, BS, Benedict U. Nwachukwu, MD, MBA, Russell F. Warren, MD, David M. Dines, MD, Joshua S. Dines, MD, Frank A. Cordasco, MD, MS, Stephen Lyman, PhD, Lawrence V. Gulotta, MD

Journal

Journal of Shoulder and Elbow Surgery. 2019 Sep;28(9):1809-1815.

Abstract

Background

The purpose of this study was to evaluate the psychometric properties of the Patient-Reported Outcomes Measurement Information System (PROMIS) physical function computer adaptive test (PF-CAT) relative to the American Shoulder and Elbow Surgeons (ASES) score in patients with glenohumeral osteoarthritis undergoing primary anatomic total shoulder arthroplasty (TSA).

Methods

A retrospective study of an institutional TSA registry was performed. Preoperative PROMIS PF-CAT and ASES scores were collected. Floor and ceiling effects were determined, and convergent validity was established through Pearson correlations. Rasch partial credit modeling was used for psychometric analysis of the validity of PF-CAT and ASES question items. Person-item maps were generated to characterize the distribution of question responses along the latent dimension of shoulder disability.

Results

Responses from 179 patients (184 shoulders) were included. PF-CAT had a moderate correlation to ASES (r = 0.487; P < .001), with no floor or ceiling effects; ASES had a 1.1% floor effect and no ceiling effect. With iterative Rasch model item-reduction analysis eliminating poorly fitting question items, all possible PF-CAT items were eliminated after 6 iterations. With ASES, just 1 function question item was dropped. Person-item maps showed ASES to be superior to PROMIS PF-CAT psychometrically, with sequential and improved coverage of the latent dimension of shoulder disability.

Conclusion

Despite moderate correlation with ASES, PROMIS PF-CAT demonstrated inferior validity and psychometric properties in patients undergoing TSA. PF-CAT should not replace the ASES in this population of patients. KeywordsASES; PROMIS; arthroplasty; computer adaptive test; osteoarthritis; patient-reported outcomes; physical function; shoulder.


About the Author

Michael Fu Head Shot (1).jpg

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.


Continued Inpatient Care After Primary Total Shoulder Arthroplasty Is Associated With Increased Short-term Postdischarge Morbidity: A Propensity Score–Adjusted Analysis

Authors

John M. Apostolakos, MD, MPH, Venkat Boddapati, MD, Michael C. Fu, MD, MHS, Brandon J. Erickson, MD, David M. Dines, MD, Lawrence V. Gulotta, MD, Joshua S. Dines, MD

Journal

Orthopedics. 2019 Mar 1;42(2):e225-e231.

Abstract

Advances in surgical technique and implant design during the past several decades have resulted in annual increases in shoulder arthroplasty procedures performed in the United States. The purpose of this investigation was to use the National Surgical Quality Improvement Program database to analyze the rates of morbidity following shoulder arthroplasty. The authors hypothesized that, independent of predischarge patient factors, discharge to inpatient facilities is associated with increased short-term morbidity. Patient demographics, intraoperative variables, and information about postoperative complications/readmissions up to 30 days after the operative event were collected from the National Surgical Quality Improvement Program database for the period 2005 to 2015. Patients were divided into 2 cohorts based on discharge to home vs non-home facilities. Unadjusted baseline patient characteristics were compared using Pearson's chi-square test, and a propensity score–adjusted comparison was also performed. Overall, 9058 patients were included. Of these, 7996 (88.3%) were discharged to home and 1062 (11.7%) were discharged to a non-home facility. On propensity-adjusted analysis, complications determined to be statistically significantly associated with non-home discharge included cardiac (odds ratio, 4.19; 95% confidence interval, 1.75–10.04; P=.001), respiratory (odds ratio, 2.63; 95% confidence interval, 1.47–4.70; P=.001), urinary tract infection (odds ratio, 2.66; 95% confidence interval, 1.52–4.67; P=.001), and death (odds ratio, 7.51; 95% confidence interval, 2.42–23.27; P<.001). Overall, complications were statistically significantly associated with non-home discharges (odds ratio, 2.05; 95% confidence interval, 1.59–2.64; propensity-adjusted P<.001). This investigation indicated an association between postdischarge placement into non-home facilities and an increase in short-term morbidity, regardless of preoperative patient comorbidities.


About the Author

Michael Fu Head Shot (1).jpg

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.


Effect of Metabolic Syndrome and Obesity on Complications After Shoulder Arthroplasty

Authors

Grant H. Garcia, MD, Michael C. Fu, MD, MHS, Matthew L. Webb, BA, David M. Dines, MD, Edward V. Craig, MD, MPH, Lawrence V. Gulotta, MD

Journal

Orthopedics. 2016;39(5):309-316

Abstract

Metabolic syndrome can adversely affect surgical outcomes. This study evaluated the postoperative outcomes of patients with metabolic syndrome after total shoulder arthroplasty (TSA). A retrospective cohort study of 4751 patients undergoing TSA was conducted with use of the American College of Surgeons National Surgical Quality Improvement Program database from 2005 to 2013. Metabolic syndrome was defined as hypertension, diabetes, and body mass index of 30.0 kg/m2 or greater. Multivariable logistic regression analysis was performed for the outcomes of any postoperative complications and extended length of stay. Patients classified as obese III had a significantly increased risk of extended length of stay (P=.011) compared with control subjects who were of normal weight. In the multivariable adjusted models, compared with nonobese patients, those classified as obese I and obese II had a significantly decreased risk of postoperative complications (odds ratio, 0.84, P=.020, and odds ratio, 0.82, P=.045, respectively), whereas those classified as obese I were less likely to have extended length of stay (odds ratio, 0.79, P=.004). Metabolic syndrome was not a significant predictor of postoperative complications or extended length of stay. Morbidly obese patients undergoing TSA have an increased risk of postoperative complications and extended length of stay. Those classified as obese I and obese II may have a decreased risk of postoperative complications and shorter length of stay. Despite the hypothesized negative effect of metabolic syndrome on outcomes, the overall effect of metabolic syndrome was insignificant. These results are consistent with previous studies on obesity in patients undergoing TSA and may explain why recent studies have not shown differences in the rate of complications after TSA in obese patients with a body mass index of 30 to 40 mg/kg2.


About the Author

Michael Fu Head Shot (1).jpg

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.


Malnutrition: A Marker for Increased Complications, Mortality, and Length of Stay After Total Shoulder Arthroplasty

Authors

Grant H. Garcia, MD, Michael C. Fu MD, MHS, David M. Dines MD, Edward V. Craig MD, MPH, Lawrence V. Gulotta, MD

Journal

Journal of Shoulder and Elbow Surgery, 2016-02-01, Volume 25, Issue 2, Pages 193-200

Abstract

Background

Malnutrition is an established risk factor for postoperative complications. The purpose of this investigation was to determine the overall prevalence of malnutrition in total shoulder arthroplasty (TSA) patients, the differences in prevalence across obesity subgroups, and the overall complication risk of malnourished patients compared with normal patients.

Methods

The American College of Surgeons National Surgical Quality Improvement Program database was queried for TSA cases from 2005 to 2013 for this retrospective cohort study. Malnutrition was defined as preoperative albumin concentration of <3.5 g/dL. Rates of postoperative complications were compared between normal and malnourished patients.

Results

We identified 4,655 TSA cases, with preoperative albumin measurements available for 1681 patients (36.1%). Propensity score adjustment successfully reduced selection bias, with adjusted P values of >.05 for demographics, body mass index, and modified Charlson Comorbidity Index. Of the cohort with albumin measurements, 7.6% of patients were malnourished according to our criteria. Bivariate analysis showed malnourished patients had higher rates of pulmonary complications, anemia requiring transfusion, extended length of stay (LOS), and death (all P < .05). Propensity-adjusted multivariable logistic regression demonstrated that malnutrition was significantly associated (all P < .05) with postoperative transfusion (odds ratio, 2.49), extended LOS (odds ratio, 1.69), and death (odds ratio, 18.09).

Conclusion

The overall prevalence of malnutrition was 7.6%. Malnourished patients were at a significantly increased risk for blood transfusion, longer hospital LOS, and death within 30 days of surgery. Multivariable analysis showed TSA patients with preoperative albumin levels of <3.5 g/dL are at much higher risk for morbidity and death after surgery than patients with albumin levels within normal reference ranges.


About the Author

Michael Fu Head Shot (1).jpg

Dr. Michael Fu is an orthopedic surgeon and shoulder specialist at the Hospital for Special Surgery (HSS), the best hospital for orthopedics as ranked by U.S. News & World Report. Dr. Fu treats the entire spectrum of shoulder conditions, including rotator cuff tears, shoulder instability, and shoulder arthritis. Dr. Fu was educated at Columbia University and Yale School of Medicine, followed by orthopedic surgery residency at HSS and sports medicine & shoulder surgery fellowship at Rush University Medical Center in Chicago. He has been a team physician for the Chicago Bulls, Chicago White Sox, DePaul University, and NYC’s PSAL.

Disclaimer: All materials presented on this website are the opinions of Dr. Michael Fu and any guest writers, and should not be construed as medical advice. Each patient’s specific condition is different, and a comprehensive medical assessment requires a full medical history, physical exam, and review of diagnostic imaging. If you would like to seek the opinion of Dr. Michael Fu for your specific case, we recommend contacting our office to make an appointment.