【作者】 齐振熙；

【导师】 王和鸣；

【作者基本信息】 福建中医学院 ， 中医骨伤科学， 2000， 硕士

【摘要】 鳞纹钉经皮穿刺内固定治疗股骨颈骨折，是目前临床较为常用的治疗方法。采用三根鳞纹钉交叉内固定，具有多方向固定的特点，抗旋抗扭力强，其固定符合生物力学的准则，因此，固定可靠，骨折愈合快，股骨头缺血坏死率低，疗效满意。为了探明其力学效应，寻求三根钉的最佳组合方式，我们应用光弹性实验和电测法，研究股骨颈的应力分布规律以及三根钉在不同体位与不同组合方式下的应力状态，同时，采用机械测试的方法测定各种条件下股骨头的垂直位移量。 结果表明： 1．鳞纹钉内固定符合股骨颈的生物力学原理。 2．股骨颈在完全骨折的情况下，三根钉都承担很大的应力状态。 3．不同体位三根钉所承受的应力不同。 4．三根钉采用倒三角形的组合方式固定效果最佳。 5．三根钉相互之间交叉的角度愈大，固定效果愈好。 6．三根钉的进钉深度以钉尖到达股骨头球面边缘为宜。更多还原

【Abstract】 Experimental Study of Biomechanics on Femoral Neck Fracture Treated with Internalfixation ofThree Squama-stria NailsMajor:Traumatology and Orthopedics of TCMApplicant:Qi ZhengxiTutor:Prof. Wang HemingABSTRACTIt is a commonly-used treatment in clinical that using squama-stria nails punctured through skin to internalfix fractures of the femoral neck.The internalfixation with three squama-stria nails which crossing over each other has the effect of fixation in many-direction. And this fixation is according to the biomechanics criterion. So this treatment can make the fixation firmly, fast the healing of fracture and derease the occuring of necrosis of femoral head. The treating effect is satisfied. In order to seek the mechanics effect and search the best combination of three nails, we use the methods of electric measure and photoelastic experiment to study the laws of stress distribute in the femoral neck and different stresses conditions when the three nails fixxed at different body posture and different combination. At the same time,we use the mechanical measurement method to measure the vertical displacement of femoral head under different condition.The results showed:l.The internalfixation of squama-stria nails is according to the theory of biomechanics of femoral neck.2.At the state of whole-fracture of femoral neck, the three nalils all endure great stress.3.The three nails endure different stresses at the state of different posture of body.4.The best fixation effect is the three nails making a shape of upside down of triangle.5.The bigger of the crossing angle of the three nails,the better the fixation effect.6.The best depth of the nails inside the femoral neck is the tip of nails touch the edge of spherical surface of the femoral head.更多还原