The bicipitoradial bursa lies between the distal biceps tendon and the radial tuberosity, becoming particularly important during forearm pronation when the radial tuberosity rotates posteriorly to face the biceps tendon directly. Bicipitoradial bursitis from repetitive forearm rotation or a partial biceps tendon tear producing an inflammatory reaction within the bursa produces anterior elbow pain and tenderness reproduced by resisted supination and passive pronation.
| Location | Between the distal biceps tendon and the radial tuberosity |
|---|---|
| Nearby |
|
Reduces friction between the biceps tendon and the radial tuberosity during forearm rotation, particularly during pronation which brings the tuberosity into close contact with the tendon
Bicipitoradial bursitis is identified on MRI or ultrasound as fluid between the distal biceps tendon and the radial tuberosity, sometimes presenting as an antecubital fossa swelling. It can occur in isolation from repetitive forearm rotation in manual workers or alongside partial distal biceps tears, which produce similar symptoms and often coexist. A markedly enlarged bursa can compress the nearby posterior interosseous (deep radial) nerve. Aspiration or image-guided injection relieves most cases, and the bursa is encountered during distal biceps repair.
Distal biceps tendon bursal inflammation from repetitive forearm rotation producing anterior elbow pain with full extension and pronation, managed with activity modification and corticosteroid injection.
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