吻合血管的掌短肌皮瓣修复拇指指腹缺损

REPAIR OF PULP DEFECT OF THUMB BY FREE PALMARIS BREVIS MUSCULOCUTANEOUS FLAP

对掌短肌皮瓣的应用解剖进行了复习和研究后，在临床上对２例拇指指腹缺损的患者，采用吻合血管的掌短肌皮瓣进行修复。术后拇指指腹缺损完全修复愈合，指腹有感觉，供手区无疼痛及感觉障碍，运动正常。掌短肌皮瓣质地与拇指指腹相似，耐磨，切取的面积较大，可带感觉神经，是修复拇指较大面积缺损的较好供区之一。

It is difficult to repair the pulp defect of finger with good function. Here reported two cases of pulp defect of the thumb which were repaired with free palmris brevis musculo cutaneous flap. The flap was designed as the following: taken the line crossing the pisiform and metacarpo phalangeal joint of the little finger as the longitudinal axis of the flap. The proximal end of the flap was at the level of pisiform and the distal end was the distal transverse palmar crease. The radial border was the radial side of the palmris brevis and ulnar border was the ulnar edge of the palm. The flap should not be larger than 6.5 cm×2.5 cm. The flap was dissected with proper ulnar vessels and the accompanying arterial branch and superficial branch of the ulnar nerve. The flap was transferred to repair the pulp defect of the thumb. The vessels were anastomosed with the radial artery and cephalic vein at the snuffbox. The nerves were sutured to the digital nerve. Three months after operation, the defect was healed and the sensation of pulp was recovered. The donor area was painless and without sensation disturbance. The motion of the little finger was normal. The function of the thumb was restored. It was concluded that the palmaris brevis musculocutaneous flap is one of the best donor region to repair pulp defect of thumb.