title: Validation of the Western Ontario Rotator Cuff index in patients with arthroscopic rotator cuff repair: a study protocol.
abstract: BACKGROUND
  Arthroscopic rotator cuff repair is described as being a successful procedure. These results are often derived from clinical general shoulder examinations, which are then classified as 'excellent', 'good', 'fair' or 'poor'. However, the cut-off points for these classifications vary and sometimes modified scores are used.Arthroscopic rotator cuff repair is performed to improve quality of life. Therefore, disease specific health-related quality of life patient-administered questionnaires are needed. The WORC is a quality of life questionnaire designed for patients with disorders of the rotator cuff. The score is validated for rotator cuff disease, but not for rotator cuff repair specifically. The aim of this study is to investigate reliability, validity and responsiveness of WORC in patients undergoing arthroscopic rotator cuff repair.
  
  
  METHODS
  An approved translation of the WORC into Dutch is used. In this prospective study three groups of patients are used: 1. Arthroscopic rotator cuff repair; 2. Disorders of the rotator cuff without rupture; 3. Shoulder instability. The WORC, SF-36 and the Constant Score are obtained twice before therapy is started to measure reliability and validity. Responsiveness is tested by obtaining the same tests after therapy.
authors: Department of Orthopedic Surgery, St. Antonius Ziekenhuis, PO Box 2500, 3430 EM Nieuwegein, The Netherlands. r.wessel@antoniusziekenhuis.nl
authors: Ronald N
authors: RN
authors: Wessel
authors: Tjoan E
authors: TE
authors: Lim
authors: Henk
authors: H
authors: van Mameren
authors: Rob A
authors: RA
authors: de Bie
mesh_terms: D001182:Arthroscopy / Q000592:standards*; D004185:Disability Evaluation; D006801:Humans; D017063:Outcome Assessment, Health Care / Q000379:methods*; D011183:Postoperative Complications / Q000175:diagnosis; D017410:Practice Guidelines as Topic; D011446:Prospective Studies; D017006:Rotator Cuff / Q000601:surgery*; D000070636:Rotator Cuff Injuries; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires / Q000592:standards*