摘要
目的比较3种方法测量西藏小型猪胫骨髓腔形态的优缺点,探索其胫骨髓腔形态学特点。方法取30例小型猪胫骨,分别予X线、CT三维重建、实物标本测量髓腔长度、髓腔最狭窄点水平径线长度、髓腔弧度,行统计学比较。结果 (1)小型猪胫骨髓腔近段三角形,远段椭圆形,中间为过渡形态;髓腔全长:X线(11.75±0.58)cm,CT(11.58±0.55)cm,实物标本(11.70±0.65)cm,P=0.524;最狭窄点水平正位径线长度分别为(0.88±0.08)、(0.84±0.06)、(0.85±0.07)cm,P=0.032;髓腔弧度分别为(26.89±0.50)°、(26.06±0.49)°、(26.50±0.42)°,P=0.106。结论 (1)CT三维重建测量更接近实物标本测量,精确性高于X线,可作为一种新的测量方法;(2)西藏小型猪胫骨髓腔长度适中,形态与人相似,适于设计新型可控微动胫骨髓内钉。
Objective To compare the advantages and disadvantages of three methods in the morphological measurements and explore the morphological characteristics of the tibia medullary cavity in Tibet mini-pigs. Methods Tibia specimens were collected from thirty Tibet mini-pigs. Measurement of the length, arc as well as the coronal and sagittal width of the narrowest point of the tibial medullary cavity was carried out through plain radiography and CT 3-dimensional reconstruction or and directly in the specimens Data were recorded and processed using appropriate statistic methods. Results The main morphological characteristics of the tibial medullary cavity in Tibet mini-pigs is being triangular and elliptical in shape in the proximal and distal ends, respectively, and being intermediate in shape in the middle segment. The length of the medullary cavity measured by X-ray , CT and specimen were （11.75 ±0.58）cm, （11.58 ±0.55）cm and （11.70 ±0.65）cm, respectively. （P=0.524）. Measurements of the coronal width of the narrowest point were 0.88±0.08 cm, 0.84±0.06 cm, 0.85±0.07cm, respectively （P=0.032）. No significant differences were detected in the measurements of the arc of tibial medullary cavity （26.89±0.50°, 26.06±0.49°, 26.50±0.42°, P=0.106 ）. Conclusion The accuracy of measurement through CT 3-dimensional reconstruction is higher than that through plain radiography, and the results of measurement through CT 3-dimensional reconstruction is closer to measurement directly performed in specimens. Therefore, data measured through CT 3-dimensional reconstruction are recommended for scientific research. The shape of the tibia medullary cavity in Tibet mini-pigs is similar to the human＇s, making it suitable for designing new intramedullary nails.
出处
《中国临床解剖学杂志》
CSCD
北大核心
2013年第1期68-71,共4页
Chinese Journal of Clinical Anatomy
基金
省部产学研结合项目(2009B090300279)
关键词
西藏小型猪
胫骨髓腔
CT三维重建
髓内钉
Tibet mini-pigs
Tibia medullary cavity
Three-dimensional reconstruction of CT
Intramedullary nail
