Rotator cuff tear
Right shoulder pain, abduction weakness - few wks. No trauma.
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Symptomatic side shows absent biceps long head tendon in bicipital groove along with fatty infiltration - volume loss of its muscle belly favouring chronic tear of long head bicpes tendon.
Sypmtomatic side supraspinatus tendon is replaced by fluid cleft. Tendon retraction is about 37 mm. Anterior fibres of infraspinatus tendon show full thickness tear. However, posterior fibres of infraspinatus tendon are intact.
There is mild volume loss and increased echogenesity ( fatty infiltration ) involving supraspinatus and infraspinatus muscles on sypmtomatic side.
Asymptomatic side ( Examined for comparision ) shows normal findings - intact cuff.
Ultrasound findings show multiple tendon tear involving rotator cuff. Changes in muscle bellies ( volume loss and increased echogenesity ) suggest relatively chronic pathology.
- Ultrasound of the musculoskeletal system. S. Bianchi & C. Martinoli. 1st Indian Reprint 2k7.