深层桡尺远侧韧带对桡尺远侧关节稳定作用的生物力学研究

发布时间：2018-03-09 21:32

  本文选题：腕关节　切入点：生物力学　出处：《北京大学学报(医学版)》2017年03期 　论文类型：期刊论文

【摘要】：目的:明确掌、背侧深层桡尺韧带对桡尺远侧关节的稳定作用。方法:将14具新鲜冰冻上肢标本随机分为2组,解剖显露桡尺远侧韧带,分别标记掌、背侧深层韧带,解剖游离出旋前圆肌及旋后肌,在桡骨Lister结节处垂直骨面置一枚克氏针,前臂中立位时在尺骨远端同一水平位置平行置一枚克氏针作为标记点,用自制的夹具将标本固定于生物力学仪器上,使肘关节屈曲90°,固定尺骨,使桡骨可围绕尺骨自由旋转。于旋前圆肌加载50 N的力模拟前臂主动旋前,于旋后肌加载60 N的力模拟主动旋后,分别切断掌、背侧深层桡尺韧带,测量桡骨相对于尺骨的位移。结果:切断掌侧深层韧带后,前臂旋前时桡骨相对于尺骨的位移明显改变(t=5.591,P=0.001),旋后时无明显改变(t=0.433,P=0.680)。切断背侧深层韧带后,前臂旋前时桡骨相对于尺骨的位移无明显改变(t=1.000,P=0.356),旋后时明显改变(t=-6.225,P=0.001)。结论:单独切断掌侧深层桡尺韧带会造成桡尺远侧关节旋前时不稳定,单独切断背侧深层桡尺韧带会造成桡尺远侧关节旋后时不稳定。
[Abstract]:Objective: to determine the stabilizing effect of deep radial ulnar ligament on distal radioulnar joint. Methods: fourteen fresh frozen upper limb specimens were randomly divided into two groups, the distal radial ulnar ligament was dissected and the palmar and deep dorsal ligaments were labeled respectively. A Kirschner's needle was placed on the vertical surface of the radial Lister's tubercle, and a Kirschner's needle was placed in the neutral position of the forearm at the same horizontal position of the distal ulna. The specimen was fixed on a biomechanical instrument with a self-made fixture. The elbow joint was buckled by 90 掳, the ulna was fixed, and the radius was rotated freely around the ulna. The displacement of radius relative to ulna was measured by transecting palmar and deep radial ulnar ligament respectively after 60 N load of supination muscle. Results: after cutting deep metacarpal ligament, The displacement of the radius relative to the ulna was significantly changed during the forearm pronation, and no significant change was observed during the rotation. After the deep dorsal ligament was cut off, the deep dorsal ligament was cut off. The displacement of the radius to the ulna during forearm pronation has no obvious change, and the displacement of the radius to the ulna is not significantly changed during pronation. Conclusion: cutting off the deep radial ulnar ligament alone may cause instability in the pronation of the distal radioulnar joint. Transection of the deep radial ulnar ligament alone may cause instability in the pronation of the distal radioulnar joint.
【作者单位】： 北京积水潭医院手外科;
【分类号】：R318.01
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本文编号：1590308