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Introduction Distal biceps tendon rupture can be treated with surgical repair using either the single-incision or double-incision technique. The modified Boyd- Anderson double-incision technique, has been associated with an increased risk of postoperative range of motion (ROM) limitations due to a higher incidence of heterotopic ossification.Materials and Methods This prospective study followed a successive cohort of patients undergoing surgical repair of a distal biceps tendon rupture. All patients were treated using the modified Boyd-Anderson double-incision technique and followed-up 3, 6, and 12 months postoperatively. Clinical outcomes were assessed using the Oxford Elbow Score (OES) and objective measurements of elbow ROM.Results The mean (SD) OES improved from 24 (11) preoperatively to 37 (8), 41 (7), and 42 (8) at 3, 6, and 12 months postoperatively, respectively. Flexion deficit decreased from 5° (11) to 2° (13), 0° (1), and 2° (9), while extension deficit improved from 8° (17) to 0° (4), 0° (1), and 0° (3). Supination and pronation deficits remained minimal, with supination ranging from 3° (8) preoperatively to 6° (14), 2° (5), and 4° (9), and pronation from 2° (8) to 4° (11), 2° (6), and 4° (9). At 12 months, deficits >20° were observed in 3/95 (3%) for flexion, 1/91 (1%) for extension, 8/95 (8%) for supination, and 9/94 (10%) for pronation.Conclusion The modified Boyd-Anderson double-incision technique demonstrated good patient reported outcome, OES being 42 out of 48 points, and near-normal ROM one year after surgery.