三角固定髓内钉对A2.2型股骨转子间骨折稳定性及抗扭转性的影响

发布时间：2018-08-31 20:55

【摘要】：目的探讨三角固定髓内钉(TPFNA)对A2.2型股骨转子间骨折稳定性及抗扭转性的影响。方法选取6对新鲜成人股骨标本制作A2.2型股骨转子间骨折模型。将骨折模型随机分为TPFNA组和股骨近端防旋髓内钉(PFNA)组,每组同侧6肢,分别给予TPFNA、PFNA固定。记录100、200、300、400、500、600 N垂直压缩状态下位移情况及扭转角为1°、2°、3°、4°、5°时的扭矩。结果 TPFNA组在200、300、400、500、600 N垂直压缩状态下的位移均小于PFNA组(P均0.05)。TPFNA组扭转角为2°、3°、4°、5°时的扭矩均大于PFNA组(P均0.05)。结论A2.2型股骨转子间骨折行TPFNA固定的稳定性及抗扭转能力均较好,均优于PFNA。
[Abstract]:Objective to investigate the effect of triangle fixed intramedullary nail (TPFNA) on stability and anti-torsion of A 2. 2 intertrochanteric fracture. Methods A 2.2 model of femoral intertrochanteric fracture was made from 6 pairs of fresh adult femur specimens. The fracture model was randomly divided into TPFNA group and (PFNA) group. Six limbs were fixed with TPFNA,PFNA in each group. The displacement of 100200300400500600N under vertical compression and the torque of 1 掳2 掳2 掳3 掳3 掳4 掳5 掳of torsion were recorded. Results the displacements of TPFNA group under 200300400500600 N vertical compression were lower than those of PFNA group (P 0.05). The torque of TPFNA group was higher than that of PFNA group when the torsion angle was 2 掳(3 掳) and 4 掳(5 掳) (P 0.05). Conclusion the stability and torsion resistance of A2.2 type femoral intertrochanteric fracture with TPFNA fixation are better than those of PFNA..
【作者单位】：广州中医药大学第一附属医院;
【基金】：广东省自然科学基金资助项目(2014A030310379) 广州市科技计划一般项目(1563000664)
【分类号】：R687.3

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