Abstract
Background
Although there are many advantages to patient-based assessment for musculoskeletal conditions, one common problem is that many of these assessments are perceived to be subjective. To overcome this limitation for patient-based shoulder evaluation, we developed a modified Constant-Murley score that allows patients to complete subjective and objective sections of the score.
Questions/purposes
The purpose of our study was to assess the reliability of the new patient-based Constant-Murley score questionnaire by comparing composite scores and subscores obtained with those obtained using the standard physician-based Constant-Murley questionnaire in the same group of patients.
Methods
Between August and October 2000, all patients having shoulder surgery in our institute were invited to participate in this study; 58 of 61 (95%) opted to do so and completed the patient-based questionnaire at preoperative and postoperative assessments. The clinician-based Constant-Murley score was performed by a clinician who was blinded to the corresponding patient-based questionnaire. Patients underwent various procedures ranging from manipulation under anesthesia and arthroscopic procedures to reverse shoulder arthroplasty.
Results
The mean patient-based and the clinician-based Constant-Murley scores were 47 (SD = 19.5; range, 4–90; N = 108) and 48 (SD = 19.9; range, 4–90; N = 108) points respectively. The mean difference was −1.3 (SD = 3; range, −11 to 8; N = 108) points. The new patient-based Constant-Murley score questionnaire reproduced the patient-based method and had substantial to almost perfect agreement with it for the composite score and various subgroups.
Conclusions
These results suggest that a patient-based questionnaire can be used interchangeably with or in place of a clinician-based Constant-Murley score. These results apply to subjective and objective items of the Constant-Murley score.
Level of Evidence
Level III, diagnostic study. See the Instructions for Authors for a complete description of levels of evidence.
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Each author certifies that he or she, or a member of his or her immediate family, has no funding or commercial associations (eg, consultancies, stock ownership, equity interest, patent/licensing arrangements, etc) that might pose a conflict of interest in connection with the submitted article.
All ICMJE Conflict of Interest Forms for authors and Clinical Orthopaedics and Related Research editors and board members are on file with the publication and can be viewed on request.
This study was performed at the Reading Shoulder Unit, Royal Berkshire Hospital, Reading, UK.
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Levy, O., Haddo, O., Massoud, S. et al. A Patient-derived Constant-Murley Score is Comparable to a Clinician-derived Score. Clin Orthop Relat Res 472, 294–303 (2014). https://doi.org/10.1007/s11999-013-3249-3
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DOI: https://doi.org/10.1007/s11999-013-3249-3