✅ Indirect Imaging Findings of Subscapularis Tendon Tear
1️⃣ Medial Displacement of Long Head Biceps Tendon
- Medial dislocations or subluxations of the long head biceps brachii tendon are commonly associated with subscapularis tendon tears.
- Intraarticular dislocation of the long head biceps tendon suggests a full-thickness tear of the tendinous attachment to the lesser tuberosity.
2️⃣ Fatty Infiltration of Subscapularis Muscle
- Fatty infiltration is a specific but insensitive indicator of subscapularis tendon tears.
- Typically involves the superior portion, sparing the inferior portions of the muscle.
- The variability of this finding often reflects the chronicity of the tear.
3️⃣ Lesser Tuberosity Bony Changes
- Cysts in the lesser tuberosity are more specific indicators of subscapularis tears.
- Cortical irregularities are more sensitive findings.
✅ Evaluation of Subscapularis Tears and Biceps Tendon Displacement
Key Associations
- Medial displacement of the long head of the biceps tendon is commonly associated with subscapularis tendon tears.
- Intra-articular dislocation of the biceps tendon suggests a full-thickness tear at the lesser tuberosity.
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