| Summary: | We report a case of a partial rupture of the distal biceps tendon that was surgically treated using a palmaris longus tendon graft. A 58-year-old man complained of increasing pain with resisted elbow flexion and supination in the antecubital fossa. Magnetic resonance imaging revealed the irregularity of a distal attachment of the biceps brachii and peripheral signal changes. We diagnosed a partial rupture of the distal biceps tendon. Because conservative treatment failed, surgical treatment was performed through a single anterior approach. The insertion of the tendon was partially ruptured at the radial tuberosity. After the involved site was debrided, the palmaris longus tendon was grafted with suture anchors to reinforce the remaining tendon. Postoperative immobilization was not performed, and all moves were freed after 3 weeks. At the 6-year postoperative follow-up, the patient no longer experienced pain and returned to his original job without any limitations. Keywords: Augment, Distal biceps tendon, Palmaris longus tendon graft, Partial rupture, Single incision
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