Repair of finger pulp defect using free digital artery dorsal branch flap

Abstract

Objective To introduce the techniques of using free digital artery dorsal branch flap to repair finger pulp defect, and evaluate the clinical outcomes. Methods Free digital artery dorsal branch flap was transferred to repair finger pulp defect in 6 fingers of 6 patients. The area of flaps ranged from 1.0 cm× 1.0 cm to 2.0 cm× 2.5 cm. The donor sites were dorsoradial or dorsoulnar aspect of the proximal phalanx of the injured finger or the adjacent finger. The donor areas were covered with full-thickness skin graft. Results All 6 flaps survived postoperatively. Follow-up period ranged fiom 6 to 18 months, with an average of 12 months. The texture and appearance of the flaps were satisfactory. Finger function recovery was good, with 0° to 60° range of motion of the distal interphalangeal joint. Two-point discrimination of the flaps was 6 to 11 mm. Primary healing was achieved in the donor area wound. Long-term follow up showed that the skin grafts were wearable. There was no ulceration, and the movement of the donor finger was not impaired. Conclusion Free digital artery doral branch flap transfer is an ideal procedure for repair of finger pulp defect. The technique is relatively straightforward. The reconstructed finger pulp is full, aesthetic and sensate. Key words: Surgical flaps; Finger injuries; Dorsal side flap of digital artery