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Purpose: To investigate the clinical efficacy of using dorsal digital cutaneous branch flap with partial extensor tendon in repairing compound tissue defects of the dorsal digits of the hand. Methods: Between January 2018 and January 2020, ten patients with skin and soft tissue defects of the digits accompanied by extensor tendon defects underwent surgical repair using dorsal digital cutaneous branch flap with partial extensor tendon. The donor site was repaired with dorsal metacarpal artery flap. The smallest skin defect area was 2.0 × 1.5 cm, while the largest skin defect area was 4.0 × 3.0 cm. The length of tendon defect ranged from 1.5 to 3.0 cm. Sensation within the flap, aesthetic appearance of both the donor and recipient sites, functional recovery, and return-to-work time were measured. Results: All 10 flaps survived after surgery. All patients were followed up for 12–18 months, with an average follow-up period of 15.4 months. After flap repair, the digits had satisfactory shape and appearance along with a soft texture. Hand function was excellent in eight cases and good in two cases. Two-point discrimination was 6–9 mm with an average of 8 mm. No patient experience cold intolerance. The donor sites healed well with satisfactory appearance. Conclusion: Dorsal digital cutaneous branch flap with partial extensor tendon could be used to repair skin and tendon defects simultaneously. The advantages of this method include simple donor tissue harvesting; less donor-site morbidity; reliable blood supply; and satisfactory recovery of appearance, sensation, and function of the flap. Therefore, this method could be suitable for repairing soft tissue defects of the dorsal digits with extensor tendon defects.

Clinical application of dorsal digital cutaneous branch flap with partial extensor tendon in repairing compound tissue defects of the dorsal finger