Overview
The aim of this multicenter non-controlled study is to develop a multivariable prediction model of pain/disability improvements in patients with full-thickness rotator cuff tears, after a physical therapy treatment based on therapeutic exercise and education.
Description
A multivariable prediction model for the improvement in shoulder pain and disability will be developed based on the following predictors:
- Body mass index [kg/m2, Fractional polynomials FP2].
- Smoking [Years, linear relationship].
- Employment status [3 categories].
- Maximum education degree [4 categories].
- Previous performance of physical exercise [2 categories].
- Baseline disability (measured with the Shoulder Pain and Disability Index) [Fractional polynomials FP2].
- Baseline pain intensity (measured with a numeric pain rating scale) [Fractional polynomials FP2].
- Pain duration [Weeks, linear relationship]
- Pain catastrophizing (measured with the Pain Catastrophizing Scale) [Linear relationship].
- Patient's expectations (measured with the Musculoskeletal Outcomes Data Evaluation and Management System) [Linear relationship].
Eligibility
Inclusion Criteria:
- Full-thickness supraspinatus rotator cuff tear diagnosed by ultrasound imaging or magnetic resonance imaging.
- Pain during resisted abduction and/or external rotation.
- Pain intensity equal or greater to 3 points on a numeric pain rating scale, or a degree of disability equal or greater to 15% on the Shoulder Pain and Disability Index.
- Pain lasting for at least 3 months.
- Adequate comprehension of written and spoken Spanish
Exclusion Criteria:
- Loss of passive external rotation at 0º of shoulder abduction equal or greater to 50% compared to contralateral side.
- Suspected neck-related shoulder pain.
- Suspected visceral-related shoulder pain.
- Sings or symptoms of shoulder instability, including dislocations and/or subluxation within the last year.
- Humerus and/or scapular fractures within the last year.
- Previous rotator cuff repair surgery within the last year.
- Presence of cancer, fibromyalgia, neurological and/or other systemic diseases.
- Cognitive impairment that makes it impossible to perform therapeutic exercise.