Biceps muscle tear
Direct blunt trauma to mid arm - Few hrs. C/o local pain & swelling. Radiograph of shoulder with humerus - No fracture ( not uploaded, no copy right ). USG to check for biceps tear.
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Intact proximal end long head biceps tendon in bicipital groove.
Intact distal end of biceps tendon attached to radial tuberosity.
Intact musculo-tendinous junction of biceps is noted in distal forearm.
A defect filled with echoes noted in biceps muscle belly.
Central echogenic tendon is intact.
Torn muscle fibres are retracted on both proximal and distal sites.
Findings favour biceps muscle tear in mid arm due to blunt direct trauma.