新型交锁髓内钉对尺骨鹰嘴横形骨折固定的力学性能影响  

Mechanical Properties of Novel Interlocking Intramedullary Nail for Fixing Transverse Olecranon Fractures

作　　者：覃小帅 高云 王冠 许玉林 刘晋珲 葛建华 段可 鲁晓波 梁成 QIN Xiaoshuai;GAO Yun;WANG Guan;XU Yulin;LIU Jinhui;GE Jianhua;DUAN Ke;LU Xiaobo;LIANG Cheng(Department of Orthopedics,the Affiliated Hospital of Southwest Medical University,Luzhou 646000,Sichuan,China;Department of Human Anatomy,Southwest Medical University,Luzhou 646000,Sichuan,China;Sichuan Provincial Laboratory of Orthopaedic Engineering,Luzhou 646000,Sichuan,China;Clinical Medicine Research Center,the Affiliated Hospital of Southwest Medical University,Luzhou 646000,Sichuan,China)

机构地区：[1]西南医科大学附属医院骨与关节外科,四川泸州646000 [2]西南医科大学人体解剖学教研室,四川泸州646000 [3]四川省骨科置入器械研发及应用技术工程实验室,四川泸州646000 [4]西南医科大学附属医院临床医学研究中心,四川泸州646000

出　　处：《医用生物力学》2022年第4期618-623,共6页Journal of Medical Biomechanics

基　　金：泸州-西南医科大合作项目(2020LZXNYDF02);泸县-西南医科大合作项目(2020LXXNYKD-01);西南医科大学课题(2019ZQN051)。

摘　　要：目的研究交锁髓内钉对尺骨鹰嘴横形骨折的固定效果。方法收集9对新鲜尺骨标本,建立尺骨鹰嘴横形骨折模型,分别利用克氏针张力带、交锁髓内钉修复骨折;分别模拟肘关节屈曲30°、45°和60°下,在肱三头肌腱处施加幅值25 N、均值45 N和频率0.5 Hz循环动态拉力载荷,记录标本在300个循环周期下的骨折位移。结果屈曲30°时,交锁髓内钉组、克氏针张力带组骨折位移分别为(1.831±0.333)、(3.723±2.390)mm(P=0.024);屈曲45°时,交锁髓内钉组、克氏针张力带组骨折位移为分别(1.167±0.374)、(2.455±0.609)mm(P=0);屈曲60°时,交锁髓内钉组、克氏针张力带组骨折位移分别为(1.407±0.342)、(3.112±1.025)mm(P=0)。交锁髓内钉修复的骨折位移更小。结论交锁髓内钉的力学性能优于克氏针张力带,交锁髓内钉固定尺骨鹰嘴横形骨折更稳定、更牢固;且利用操作工具安装交锁髓内钉,手术更精准、快捷,手术效率得到极大提高。Objective To study the effect of interlocking intramedullary nail on fixing transverse olecranon fracture.Methods Nine pairs of fresh ulna specimens were collected and the transverse fracture model of olecranon was established.Kirschner wire tension band and interlocking intramedullary nail were used to repair the fracture.Cyclic dynamic tension loads with amplitude of 25 N,mean value of 45 N and frequency of 0.5 Hz were applied to the triceps tendon under simulated elbow flexion conditions of 30°,45°and 60°,respectively.The fracture displacements of specimens within 300 cycles were recorded in three groups.Results At 30°flexion angle,the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was(1.831±0.333)mm and(3.723±2.390)mm,respectively.At 45°flexion angle,the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was(1.167±0.374)mm and(2.455±0.609)mm,respectively.At 60°flexion angle,the fracture displacement of interlocking intramedullary nail group and Kirschner wire tension band group was(1.407±0.342)mm and(3.112±1.025)mm,respectively.The fracture displacement of interlocking intramedullary nail was smaller.Conclusions The mechanical properties of interlocking intramedullary nail are better than those of Kirschner wire tension band,and the interlocking intramedullary nail is more stable and firmer for fixing transverse olecranon fracture.Moreover,the interlocking intramedullary nail is installed with the operating tool,thus the operation is more accurate and faster,and the operation efficiency is greatly improved.

关 键 词：尺骨鹰嘴 横形骨折 交锁髓内钉 克氏针张力带 

分 类 号：R318.01[医药卫生—生物医学工程]