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Study: Constant-Murley score most responsive, internally valid PRO for total shoulder arthroplasty
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An assessment of patient-reported outcome tools used among patients undergoing shoulder surgery for glenohumeral osteoarthritis showed the Constant-Murley score should serve as the primary patient-reported outcome.
Aaron D. Sciascia , PhD, ATC, PES, and colleagues had 234 patients with glenohumeral osteoarthritis (OA) undergoing total shoulder arthroplasty complete the Constant-Murley score, the Western Ontario Osteoarthritis of the Shoulder (WOOS) index, the American Shoulder and Elbow Surgeons (ASES) score, the Single Assessment Numeric Evaluation (SANE) score and patient satisfaction preoperatively and at 2 years and 5 years postoperatively. Researchers calculated effect sizes, standardized response means and relative efficiency to determine responsiveness, and determined internal validity by the presence of floor and/or ceiling effects. Researchers also constructed receiver operator characteristic curves to identify the minimum outcome score that could correctly identify a satisfied patient.
Results showed 88% of patients were satisfied at final follow-up. Researchers noted large effect sizes and standardized response means for the patient-reported outcomes (PROs). Researchers found an ASES score of 78, a WOOS index of 18, a Constant-Murley score of 73 and a SANE score of 58 were the minimum scores that most correctly identified a patient as satisfied. While marked postoperative ceiling effects were found with the ASES score, WOOS index and SANE score, results showed the Constant-Murley score was the most responsive and internally valid tool. – by Casey Tingle
Disclosures: Sciascia reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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