Application of free super-thin venous skin flap of dorsal foot for repair of soft tissue defects of finger

Objective To explore the clinical efficacy of free super-thin venous skin flap of dorsal foot for repair of soft tissue defects of finger. Methods From January 2017 to January 2018, 14 patients with soft tissue defect of finger were treated. The super-thin venous flaps were harvested from the dorsal foot according to the area of finger defects. The wound was repaired by arterialization of veins. The dorsal cutaneous nerve of foot was incised in 4 cases. The donor site was sutured directly. The functional exercises were started after 2 weeks of immobilization. Results All the patients were follow-up for 6 to 12 months, 11 cases survived uneventfully, 2 cases had partial necrosis of skin flaps, and 1 case lost follow-up after 3 months. The partial necrosis of skin flaps healed after dressing change. 10 cases had two-point discrimination of 11 to 13 mm, and 4 cases with nerve in flaps had two-point discrimination of 7 to 9 mm. Conclusion It is simple and satisfactory to repair finger tissue defects with super-thin venous skin flap of dorsal foot. The donor site can be sutured directly and the sensory function can be reconstructed simultaneously with dorsal foot nerve excision. Key words: Finger injuries; Surgical flaps; Arterialized venous; Super-thin skin flap