摘要
目的根据兔胫骨髓腔的解剖特点及解剖学参数制成适合兔胫骨固定髓内钉,建立兔胫骨骨折髓内钉固定模型。方法采用2.8～3.0 kg新西兰兔18只,取材双侧胫骨进行形态学观查,每层间隔5 mm进行CT扫描,测量不同节段髓腔的口径,根据髓腔解剖学特点,设计适合兔胫骨骨折固定的髓内钉。胫骨中上1/3处截骨,制作骨折固定髓内钉模型。结果兔胫骨上段髓腔截面呈三角形,下段呈椭圆形,中段为两者的过渡区。髓内钉截面制成三角形,上粗下细。胫骨骨折经髓内钉固定后固定效果满意。结论根据兔胫骨髓腔特点制成的髓内钉及用该髓内钉固定后可建立标准的兔胫骨骨折模型。
Objective The purpose of this study was to investigate the anatomic parameter of the rabbit tibia, and to design intramedullary nailing model on the rabbit tibia fracture faxition according to the medullary cavity anatomic feature. Method Eighteen adult New Zealand white rabbits （2.8-3.0 kg） were used in the study. Both sides of the tibia were harvested and transverse computed tomographic scanning was conducted in the interval of every 5 mm and the internal diameters were messured. The intramedullary nail for tibia fracture faxition was designed according to the rabbit tibia medullary cavity anatomic feature. The osteotomy was conducted at the board of upper and middle part of tibia. The models of tibia fracture intramedullary faxition were done. Result The shape in medullary cavity transverse section of upper part of the tibia was triangular. That of the lower part was oval. While the middle part was the transform of the two shapes. The intramedullary nail was designed according to the anatomic characteristics with it＇s transverse section being triangular. The fixation was satisfactory. Conclution The intramedullary nail designed according the anatomic feature of the rabbit tibia medullary cavity and the intramedullary nailing model on the rabbit tibia fracture faxition was rational.
出处
《实验动物与比较医学》
CAS
2008年第2期125-128,共4页
Laboratory Animal and Comparative Medicine
关键词
兔
胫骨
髓内钉
内固定
Rabbit
Tibbia
Intramedullary nail
Internal fixation
