The reliability and validity of the Turkish version of the Western Ontario Rotator Cuff Index

Abstract

To adapt the Western Ontario Rotator Cuff (WORC) index for use in Turkey and to investigate its reliability and validity; the Turkish version of the WORC was developed according to the guidelines in the literature. Seventy-two patients with rotator cuff disease were administered the questionnaire and were also evaluated by using the University of California Los Angeles (UCLA) shoulder rating scale, Constant score, and Short Form (SF)-36 to test validity. The WORC questionnaire was repeated in 35 patients after a mean interval of 2.9 days (range 2-7 days) to evaluate test-retest reliability. Cronbach's alpha was calculated as 0.92 for the total questionnaire. The intraclass correlation coefficients were very high and ranged between 0.96 and 0.98 for each section. There was a significant negative correlation between the Turkish version of WORC and UCLA (r = -0.598, P < 0.01), Constant score (r = -0.630, P < 0.01), and all subscales of SF-36 (P < 0.01). The Turkish version of the WORC index is a reliable and valid instrument for use in clinical trials in patients with rotator cuff disorders.

Cross-cultural translation of the Western Ontario Cuff Index in Chinese and its validation in patients with rotator cuff disorders

“…The overall scale of the C-WORC and all the subscales had good or excellent internal consistency, which was consistent with other cross-culture adaptation studies and the original version (Cronbach’s alpha = 0.78–0.98) [10, 20–26]. The overall scale of the C-WORC and all the subscales also showed good or excellent test-retest reliability.…”

“…In a systematic review on the patient-reported outcomes used for the evaluation of symptoms and functional limitations in individuals with RC disorders, it was concluded that the WORC is one of the most responsive questionnaires for this population [19]. The original version of the WORC was created in English and has been translated and validated into 7 languages, including German, Dutch, Brazil, and Japanese, among others [20–26]. Unfortunately, a Chinese version has not yet been published even though China has the largest population of patients with RC disorders [27].…”

Efficacy of Proprioceptive Exercises in Patients with Subacromial Impingement Syndrome

“…The functional assessments were carried out using the Turkish Version of the WORC index 16 and the ASES evaluation. 15 The shoulder index of the ASES consists of a pain score and a section of selfassessed ADL.…”

Shoulder Impingement: Relationship of Clinical Symptoms and Imaging Criteria

“…[16][17][18] A good correlation has been observed between the Constant score and the popular, disease-specific, patientevaluated Western Ontario Rotator Cuff (WORC) score. [19][20][21] The sensitivities (standardized response mean) of the 2 scores for the assessment of symptoms in patients with subacromial impingement or rotator cuff disease are comparable (slightly higher for the Constant score). 20 The aim of the present study was to investigate the relationship between clinical symptoms, as evaluated by the Constant score, and imaging criteria in patients with subacromial impingement syndrome without rotator cuff lesions.…”