The PROMIS Global-10 is a 10-item questionnaire that assesses general health related quality of life. There is a paucity of research on the utility of the PROMIS Global-10 in the evaluation of orthopedic conditions. The aim of this study is to compare PROMIS Global-10 and legacy shoulder specific patient reported outcome measures (PROMs) in patients undergoing total shoulder arthroplasty (TSA) for shoulder arthritis.
This retrospective cohort study included patients who underwent TSA for shoulder arthritis and completed preoperative and 1-year postoperative surveys. Primary outcome measures were the physical (PROMIS-P) and mental (PROMIS-M) components of PROMIS Global-10. The legacy PROMs included the American Shoulder and Elbow Surgeons (ASES) score, the Single Assessment Numeric Evaluation (SANE), and the Shoulder Activity Scale (SAS). Analyses included postoperative changes for each outcome, correlations between measures and a responsiveness assessment.
A total of 170 patients met inclusion criteria. Average age and body mass index were 67.7±7.8 years and 28.0±4.9 kg/m, respectively. All legacy PROMs and PROMIS-P were significantly higher at 1-year follow-up compared to preoperative level (p<.0001), whereas PROMIS-M did not change (p=.06). Preoperatively, both PROMIS components were either poorly correlated with all legacy PROMs (r<.04, p.05). Postoperatively, PROMIS-M was poorly correlated with all legacy PROMs (r<.04, p<.01), whereas PROMIS-P had fair correlation with ASES (r=0.5, p<.0001) and poor correlation with SANE and SAS (r<.04, p<.01). A floor effect was observed for SANE, and SANE and ASES had a ceiling effect. The effect sizes for SANE and ASES were high (d=2.01 and 2.39 respectively), whereas the effect size for SAS was moderate (d=0.65), and the effect sizes for the PROMIS measures were small (d<.5). ASES was the most responsive measure and PROMIS-M was the least responsive.
PROMIS Global-10 had limited correlation with legacy PROMs and was less responsive at 1-year follow-up in patients following TSA. The Global-10 appears to have limited utility in the evaluation of patients with shoulder arthritis both preoperatively and after TSA.
Basic Science Study; Validation of Outcome Instruments.

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