环指屈肌腱损伤吻接术前、后力学性能测试研究

研究正常环指屈肌腱拉伸力学性能和模拟屈肌腱损伤后吻接术后屈肌腱的力学性能,为临床提供生物力学参数。取10个手环指标本,解剖后暴露环指,将标本固定于电子万能试验机底座上,由钢丝绳吊钩沿屈肌腱纵行方向钩住、钢丝绳上端固定于试验机上夹头上,驱动机器,对标本进行拉伸实验,施加拉应力,直至屈肌腱断裂。对断裂后的屈肌腱模拟临床手术进行移位吻接,对10个标本做了腱与腱移位吻接。再对吻接后的标本进行拉伸实验。分别得出了正常组标本和吻接术后标本的拉伸最大载荷、应力、应变等数据。表明:屈肌腱腱与腱吻合组最大载荷、应力、应变均小于正常对照组,但模拟末端编织法吻接术腱与腱吻合组标本,仍具有较好的拉伸力学性能指标。

The Study on the Biomechanical Properties of Ring Finger Flexor Tendon Before and After Traumata Kiss Met

To study the biomechanical properties of the normal finger muscle flexor and imitate the biomechanical properties of flexor injured after anatomists to supply bioviscoelastic mechanical parameter for clinic. 10 ring finger specimen were picked and exposed after dissection. Then they were fixed on the pedestal of the electronic test machine after anatomizing it, It was hunged along the lengthways by steel wire hook, The upper part of the steel wire was fixed on the collets of the test machine. Then the machine was driven to pull the sample until breaking it, the breaking groups of muscles flexor and digital ring finger were anatomized, The samples were done the pulling test after anatomistsing, Then we got the data of maximum loads, stress and strains of normal group and dovetail group specimen, It proves that the ultimate load, stress, strain of the tendon and tendon dovetail group of flexor tendon were averagely less than that of normal control group, but the specimen of simulation terminal fix connecting skill dovetail group has better stretching mechanical property.