title: A patient-derived Constant-Murley score is comparable to a clinician-derived score.
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.
  
  
  OBJECTIVE
  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.
authors: Reading Shoulder Unit, Royal Berkshire Hospital, Reading, UK.
authors: Ofer
authors: O
authors: Levy
authors: Omar
authors: O
authors: Haddo
authors: Samir
authors: S
authors: Massoud
authors: Hannan
authors: H
authors: Mullett
authors: Ehud
authors: E
authors: Atoun
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D019637:Orthopedic Procedures; D010147:Pain Measurement / Q000379:methods*; D010149:Postoperative Pain / Q000175:diagnosis*; D015203:Reproducibility of Results; D012782:Shoulder / Q000601:surgery*; D012785:Shoulder Joint / Q000601:surgery*; D020069:Shoulder Pain / Q000175:diagnosis* / Q000601:surgery; D011795:Surveys and Questionnaires; D016896:Treatment Outcome
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