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骑缝钉在小儿下颌骨创伤的应用山西省荣军医院（０３００３１）曹向山１９８６～１９９０年我院口腔颌面外科用记忆合金压缩骑缝钉治疗下颌骨创伤患儿３例，取得满意效果，现介绍如下：临床资料男２例，女１例；分别为６岁、７岁和１０岁，３例患儿均是下颌骨创伤骨折，骨折部位分别为左下颌体，正中联合和左下颌角，其中左下颌角骨折为粉碎性，其余两例为横断骨折。３例均有明显错位，错畸形。创伤时间分别为２天、８天和３６天，其中３６天的一例已畸形愈合。手术方法：全麻下清创完毕后，暴露骨折断端。畸形愈合的首先切开皮肤、皮下、骨膜、分离、去掉骨痂，将骨折断端复位，对位。在断端两侧骨组织上，与骨表面成垂直方向各钻两个小孔，一般小儿用１．２×１０＃的骑缝钉２枚，将刺钉插入骨孔内，将切口缝合。术后４周取出骑缝钉，取钉时只暴露臂杆，用小剥离子撬出即可。结果：３例患儿去除骑缝钉后，Ｘ丝检查骨折部位对位良好，胃质愈合，开口正常，咬关系正常。讨论骑缝钉是用具有特异功能的金属——镍钛形记忆合金制成，具有特殊的物理特性，即它在温度降低后变软可作任意塑形，温度升高后它有精确记忆力而恢复到原来的形状，在恢复原形的过程中产生相当大的纵向收缩力，这种机械力在骨折断端
Application of stapling in children mandibular trauma Shanxi Provincial Inferior Army Hospital (030031) Cao Xiangshan 1986-1990 Oral and maxillofacial surgery in our hospital with memory alloy compression staple nail treatment of children with mandibular trauma in 3 cases, and achieved satisfactory results are presented below The clinical data of 2 males and 1 females were 6 years old, 7 years old and 10 years old respectively. All 3 cases were mandibular traumatic fractures. The fracture sites were left mandibular body, median joint and left mandibular angle respectively. Mandibular fractures were comminuted and the remaining two were transverse fractures. 3 cases were significantly dislocation, wrong deformity. Trauma time was 2 days, 8 days and 36 days, of which 36 cases had a malunion. Surgical methods: After debridement under general anesthesia, exposing fracture ends. First of all, healed incision skin, subcutaneous, periosteum, separation, removal of callus, the broken fracture reset, alignment. In the stump on both sides of the bone on the bone surface perpendicular to the direction of drilling two holes, the general pediatric with 1.2 × 10 # of riding staples 2, the nail inserted into the bone hole, the incision suture. Remove the staples 4 weeks after surgery, only expose the arm when taking the nail, pry out with a small strip of child can. Results: After removing the staple in 3 cases, X-ray examination showed that the fracture site was well aligned, the healing of the stomach was normal, the opening was normal and the bite was normal. Discussion Riding staples are made of a special-purpose metal-nickel-titanium shape memory alloy that has the special physical properties that it softens at any temperature and can be shaped to any shape, restores its precision after a temperature increase To the original shape, in the process of restoring the prototype in the considerable longitudinal contraction force, this mechanical force at the fracture fracture