口腔颌面部火器伤软组织缺损早期修复的实验研究

为探讨口腔颔面部火器伤软组织缺损早期修复的可行性,选用雄性犬8条,用美制M16步枪,发射M193型5.56mm弹丸致伤,射距6.0m,造成犬左面颊部全层缺损。伤后立即行清创,72h后再清创。同时切取隐动脉皮瓣,吻合血管修复皮肤缺损,颊粘膜缺损行局部拉拢缝合或局部滑行瓣修复。术后观察2～6个月。游离皮瓣成活率为75％。实验结果表明口腔颔面部火器伤软组织缺损经早期清创,72h后2次清创,用吻合血管游离皮瓣修复是可行的。

Early reconstructive surgery for oromaxillofacial soft tissue defect due to gun-shot wound in dogs

In order to assess whether there is any possibility of early reconstructive surgery to repair oromaxillofacial soft tissue defect resulting from gun-shot wound.8 dogs were wounded in the left cheek with model Mm bullet of 5.56 mm in diameter fired from a M]6 rifle made in USA with a firing distance of 6 meters.As a result,there was a hole in the left cheek of the dogs.Debridement was performed,immediately and it was repeated 72 hours after wounding.Meanwhile,saphenous artery skin flap was excised and used to repair the skin defect of the left cheek with microvascular anastomosis.The defect of the mucous membrane was repaired by drawing the adjacent mucous membrane together or by a sliding mucous membrand flap.The dogs were observed for 2 to 6 months postoperatively.The survival rate of the free skin flap was 75%.Our findings suggest that it is practicable to perform early reconstructive surgery for the repair of the oromaxillofacial soft tissue defect resulting from gunshot wound with vascular anastomotic free skin flap.