Responsiveness and disease specificity of the Western Ontario Rotator Cuff index.

The goal of this study was to determine the disease specificity and responsiveness of the Western Ontario Rotator Cuff Index (WORC). Responsiveness, two cut-off points of the minimal important change, the area under the curve, standard error of measurement, the minimal detectable change and the standardized response mean were determined. Patients undergoing a rotator cuff repair need to improve more than 35 points to be considered clinical importantly improved.

Prognostic factors for successful recovery after arthroscopic rotator cuff repair: a systematic literature review.

Study Design: Systematic literature review.

Objectives: To perform a systematic review of the literature on prognostic factors for successful recovery after arthroscopic rotator cuff repair.

Background: Rotator cuff lesion is a common shoulder disorder, with a prevalence ranging from 13% in people over 50 years of age to more than 50% in people over 80 years of age.

The conceptually equivalent Dutch version of the Western Ontario Rotator Cuff Index (WORC)©.

Background: The WORC is a quality of life questionnaire designed for patients with disorders of the rotator cuff, originally developed in English. The purpose of this study was to cross-culturally adapt the WORC for use in the Dutch population and to evaluate reliability, agreement and floor and ceiling effects of this Dutch version in a population of patients with rotator cuff disease.

Methods: Reliability was tested by measuring the Cronbach's alpha for internal consistency and intraclass correlation coefficients (ICC) for test-retest reliability.