翼状记忆合金节段内固定器对犬腰椎峡部裂愈合的影响  

Effects of wing-like memory alloy intrasegmental fixator on healing of lumbar spondylolysis in dogs

作　　者：肖文德[1] 周初松[1] 靳安民[1] 张效三 周围[3] 刘健[1] 张宇[1] 

机构地区：[1]南方医科大学珠江医院骨科中心,广州510282 [2]山东省武警医院骨科,济南251000 [3]南方医科大学珠江医院影像中心,广州510282

出　　处：《中国矫形外科杂志》2006年第17期1333-1335,共3页Orthopedic Journal of China

基　　金：广东省科技计划项目(No.20042070019);南方医科大学院长特色基金项目(2003医-M24)

摘　　要：[目的]探讨翼状记忆合金节段内固定器(WMAIF)对腰椎峡部裂愈合的影响。[方法]选取健康成年杂种犬18只,雌雄不限,均采取手术方法造成L6双侧峡部崩裂的动物模型,随机分为3组,每组6只。Ⅰ组给予WMAIF内固定术,Ⅱ组给予横突棘突钢丝内固定术,Ⅲ组未采取内固定治疗措施。术后2、4、6、8、10周行CT扫描检查。[结果]CT扫描检查显示:Ⅰ组在术后6周峡部骨性融合,Ⅱ组在术后10周峡部骨性融合,Ⅲ组峡部未见骨性融合。[结论]WMAIF可对腰椎峡部裂起到有效的内固定和持续加压作用,使峡部愈合时间缩短,是一种新型实用的节段内固定器。[ Objective] To investigate the influence of wing-like memory alloy intrasegmental fixator （WMAIF） on healing of lumbar spondylolysis. [ Method ] Eighteen healthy hybrid adult dogs were used in the experiment, regardless of gender, the L6 isthmic portion were injured by operation randomly and equally divided into three groups. Group Ⅰ were fixed with WMAIF, group Ⅱ were fixed with steel wire, group Ⅲ were treated with nothing. Every group was examined through CT at 2, 4, 6, 8 and 10 weeks. [Result] In group Ⅰ , the fracture achieved healing at 6 weeks after operation. In group Ⅱ , the fracture achieved healing at 10 weeks after operation, while no repair of fracture was found in group Ⅲ. [ Conclusion] Lumber spondylolysis fixation with WMAIF has stable and continued axial stress, WMAIF is beneficial to fracture healing, and is a new and reliable intrasegmental instrument for direct repair of lumbar spondylolysis.

关 键 词：腰椎峡部裂 内固定器 记忆合金 犬 

分 类 号：R687.3[医药卫生—骨科学]