Why use the Western Ontario Rotator Cuff Index (WORC) as a physical therapist?
The WORC questionnaire was designed to help understand the signs, symptoms, and functional limitations associated with rotator cuff tendinopathy.
This questionnaire can also be used in people with a subacromial conflict or who have undergone arthroscopic repair of the cuff.
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Description of Western Ontario Rotator Cuff Index (WORC)
The WORC is a self-questionnaire on quality of life. It consists of 21 items assessed with the Visual Analogue Scale (EVA), which are divided into 5 subcategories: physical symptoms, sports/leisure, work, lifestyle and emotions.
For each question, the patient is asked to indicate, with a line on a 100mm line, the measure of the symptom or disability he experienced during the past week.
Each scale ranges from 0 to 100 mm. To calculate the score, simply measure the number of millimeters starting from 0. The scores can be calculated in subscales or added together to obtain a total score, which can therefore range from 0 to 2100.
A percentage can be obtained by subtracting the score from 2100 and dividing by 21.
How to interpret this questionnaire?
A high score out of 2100 represents a poorer quality of life. A low percentage corresponds to a low functional level and a high percentage corresponds to a high functional level.
What equipment should I use for WORC?
No equipment is required to complete this questionnaire.
What is the average completion time of WORC?
You can complete this questionnaire in about 15 minutes.
What is the clinical value of Western Ontario Rotator Cuff Index (WORC)?
The WORC has demonstrated good test-retest reliability in several studies to measure the quality of life in patients with rotator cuff pathology.
It also shows good validity and good reactivity (element of sensitivity). It also correlates with ASES and DASH.
The French version of WORC was validated in 2015.
Bibliography
Ekeberg, Ole M., Erik Bautz-Holter, Einar K. Tveitå, Einar K. Tveitå, Anne Keller, Niels G. Juel, and Jens I. Brox. “Agreement, Reliability and Validity in 3 Shoulder Questionnaires in Patients with Rotator Cuff Disease.” BMC Musculoskeletal Disorders 9 (May 15, 2008): 68. Article link.
Kirkley, Alexandra, Christine Alvarez, and Sharon Griffin. “The Development and Evaluation of a Disease-Specific Quality-of-Life Questionnaire for Disorders of the Rotator Cuff: The Western Ontario Rotator Cuff Index.” Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine 13, no. 2 (March 2003): 84—92. Article link.
Raman, Jayaprakash, and Joy C. Macdermid. “Western Ontario Rotator Cuff Index.” Journal of Physiotherapy 58, no. 3 (2012): 201. Article link.
St-Pierre, Corinne, Clermont Dionne, François Desmeules, and Jean-Sébastien Roy. “Reliability, Validity, and Responsiveness Of A Canadian French Adaptation Of The Western Ontario RotatorCuff (Worc) Index”. Journal of Hand Therapy, February 14, 2015.
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