Sarcopenia is the loss of muscle mass due to aging, which consequently leads to a decline in muscle function. It is considered an independent risk factor for falls and fractures, disability, postoperative complications, and mortality. Rotator cuff tears are known to be influenced by systemic diseases such as diabetes, hypercholesterolemia, thyroid disorders, and osteoporosis. The aim of our study is to investigate whether there is a relationship between sarcopenia and rotator cuff tears, and if so, to determine the location and type of the tear.
Patients with rotator cuff syndrome
Aged between 40 and 75 years
History of previous shoulder surgery
Presence of shoulder pathology other than rotator cuff syndrome
History of surgical intervention involving the hip or thigh region
Being wheelchair-bound or bedridden
The study's target population will be patients aged 40 to 75 who have experienced shoulder pain for longer than three months and who have been physically evaluated and found to have rotator cuff syndrome.
Other
Prospective
Sarcopenia will be assessed using the STAR (Sonographic Thigh Adjustment Ratio) method.
Diagnostic testA detailed evaluation of shoulder MRI scans will be conducted. The presence and severity of supraspinatus tendon tears, as well as the presence of muscle atrophy (assessed using the tangent sign), will be recorded. In addition, tears in other rotator cuff tendons, signs of tendinitis, and any other pathological findings will also be documented.
STAR value
Sarcopenia will be assessed using the STAR (Sonographic Thigh Adjustment Ratio) method. In this method, gait speed, handgrip strength (measured with a dynamometer), and the chair stand test will first be conducted. For gait speed, a 6-meter walking track will be used, and patients will be instructed to walk at their normal pace. The time will be recorded with a stopwatch, and each patient will perform the test three times, with the average recorded in meters per second (m/s). Subsequently, anterior thigh muscle thickness will be measured using ultrasonography. Based on this comprehensive evaluation, patients will be categorized as non-sarcopenic, pre-sarcopenic, or sarcopenic.
Radiologic evaluation of shoulder MRI
Shoulder MRIs of patients in each of these three categories will be analyzed to assess the presence, type, and severity of rotator cuff tears. A detailed evaluation of shoulder MRI scans will be conducted. The presence and severity of supraspinatus tendon tears, as well as the presence of muscle atrophy (assessed using the tangent sign), will be recorded. In addition, tears in other rotator cuff tendons, signs of tendinitis, and any other pathological findings will also be documented.
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