Composite flap transfer from the foot for treatment of multi-finger complex soft tissue defects

Abstract

Objective To introduce the clinical application of composite flap transfer from the foot for treatment of multi-finger complex soft tissue defects. Methods This method was applied to treat 7 cases and 19 fingers. All the cases involved complex dorsal soft tissue defect of 2 to 4 fingers with extensor tendons missing and phalanx or interphalangeal joint exposed. The combined soft tissue defect area was 5.0cm×1.5cm to 9.0 cm× 2.5 cm. The flaps were designed along the axis extending from the fibular and plantar margin of the great toe to the interspace between the first and second metatarsal bones. The flap was slightly larger than the dorsal finger defect combined and the shape of the flap was the same as the combined defect. The greater saphenous vein, dorsal digital veins and dorsal metatarsal or plantar metatarsal artery and nerves were included in the flap. They were sutured with dorsal digital veins, digital artery and nerves, respectively. Extensor digitorum brevis tendons and extensor digitorum longus tendons were included in the flap to reconstruct the missing tendons. Results All the flaps survived with good texture and good appearance. Two-point discrimination recovered 6 to 8 mm. Finger extension function was restored, and active finger flexion and extension recovered satisfactorily. The donor feet were with slight scar, good appearance and normal function. Conclusion Combined dorsalis pedis,toe web and great toe fibular flap including extensor digitorum brevis and extensor digitorum longus tendon is a good option to treat multi-finger dorsal complex defects. Key words: Surgical flaps; Finger injuries; Tendon injuries; Transplantation