摘要
目的测量肘关节内侧副韧带(MCL)前束完整及断裂时在不同屈曲状态下肱桡关节的生物力学指标,探讨肘关节MCL前束对肱桡关节的生物力学影响。方法取人体肘关节标本,按是否切断肘关节MCL前束将标本分为对照组(MCL前束保留完整)及试验组(MCL前束被切断),分别测量2组标本在不同屈曲角度下(0°、30°、60°、90°)肱桡关节内平均压强和肱桡关节的接触面积。结果肘关节屈曲30°、60°时,试验组肱桡关节内平均压强大于对照组,肱桡关节接触面积小于对照组,差异有统计学意义(P<0.05);而肘关节屈曲0°、90°时,2组肱桡关节内平均压强、肱桡关节接触面积差异无统计学意义(P>0.05)。结论肘关节MCL前束在肘关节稳定中意义重大,其断裂后可导致肘关节内侧不稳定,造成肱桡关节内压强增大、关节接触面积减小。
Objective To measure the biodynamics index of the humeroradial joint when the anterior bundle of the elbow joint medial collateral ligament （MCL） was intact or disrupt in different flexion states and investigate the biodynamics effect of the anterior bundle of MCL for the humeroradial joint. Methods The specimen of human elbow joint was used and divided into control group （the anterior bundle of MCL was intact） and experimental group （the anterior bundle of MCL was broken） according to whether the anterior bundle of MCL was broken, then the pressure and the contact area in humeroradial joint of the 2 groups in the different flex angle （0°, 30°, 60°, 90°） was measured. Results When the elbow joint was in the flex angle of 30° and 60°, the average pressure in humeroradial joint of the experimental group was greater than that of control group and the contact area in humeroradial joint of the experimental group was less than that of control group, the difference was statistically significant（P 〈0.05）. When the elbow joint was in the flex angle of 0° and 90°, there was no statistically significant difference in the average pressure and contact area in humeroradial joint between the 2 groups （P 〉0.05）. Conclusion The anterior bundle of MCL has important significance in the stabilization of the elbow joint. The disrupt anterior bundle of MCL could cause the instability of inter-elbow joint and make increasing of the pressure and decreasing of the contact area in humeroradial joint.
出处
《中国骨与关节损伤杂志》
2017年第5期490-493,共4页
Chinese Journal of Bone and Joint Injury
基金
河北省医学科学研究重点课题计划(20150056)
关键词
肘关节内侧副韧带
前束
肱桡关节
关节内压强
关节接触面积
生物力学
Elbow joint medial collateral ligament
Anterior funicle
Humeroradial joint
Pressure in humeroradial joint
Contact area in humeroradial joint
Biodynamics
