西藏小型猪胫骨髓腔参数测量及临床意义
Clinical significance and morphological measurements of Tibia medullary cavity in Tibet mini-pigs
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.
Tibet mini-pigs / Tibia medullary cavity / Three-dimensional reconstruction of CT / Intramedullary nail
[1] Sigurdsen UE, Reikeras O, Utvag SE. External fixation compared to intramedullary nailing of tibial fractures in the rat
[J]. Acta Orthop,2009,80(3):375-379.
[2] Hogel F, Schlegel U, Sudkamp N, et al. Fracture healing after reamed and unreamed intramedullary nailing in sheep tibia
[J]. Injury,2011,42(7):667-674.
[3] 薛锋，侯春林，陈庆泉. 兔胫骨髓腔解剖特点与髓内钉固定模型建立
[J]. 实验动物与比较医学,2008, 28(2):125-128.
[4] 王建华，吴岳嵩，陈尔瑜，等. 胫骨骨髓腔的X线解剖及临床意义
[J]. 中国临床解剖学杂志,2001, 21(1):46-47.
[5] 闫宏伟，王坤正，康斌，等. 胫骨形态学参数研究的临床意义
[J]. 中国临床康复,2004, 8(26):5488-5490.
[6] 王毅，贾明鸣. 实验犬股骨的三维CT重建及髓腔测量
[J]. 中外医疗,2010, 29(12):170.
[7] 王向利，郑祖根，董启榕，等. 胫骨髓腔CT、X线片形态测量与分叉式交锁髓内钉设计的相关研究
[J]. 骨与关节损伤杂志,2001, 16(5):348-351.
[8] 梁伟国，周子强，宿宝贵，等. CT三维重建胫骨下段外侧面扭转形态的研究及其意义
[J]. 中国临床解剖学杂志,2005, 23(2):163-166.
[9] 洪加源，丁真奇，康两期，等. 胫骨远端后内侧CT解剖学测量及临床意义
[J]. 中国临床解剖学杂志,2010, 28(2):178-180.
[10] 王越，徐均超，高艳. CT长骨测量在骨折髓内钉固定术中的应用
[J]. CT理论与应用研究,2003, 12(2):33-35.
[11] 李建龙，李毅中，林金矿，等. 股骨近段髓腔的CT测量及股骨假体设计
[J]. 中国组织工程研究与临床康复,2011, 15(17): 3169-3172.
[12] Husebye EE, Lyberg T, Madsen JE, et al. The influence of a one-step reamer-irrigator-aspirator technique on the intramedullary pressure in the pig femur
[J]. Injury,2006,37(10):935-940.
[13] Klein C, Sprecher C, Rahn BA, et al. Unreamed or RIA reamed nailing: an experimental sheep study using comparative histological assessment of affected bone tissue in an acute fracture model
[J]. Injury,2010,41(Suppl 2):32-37.
省部产学研结合项目（2009B090300279）
京ICP备08002354号-3/
| 〈 |
|
〉 |
