外展时下盂肱韧带长度变化的测定及临床意义

J4 ›› 2009, Vol. 35 ›› Issue (4): 710-713.

外展时下盂肱韧带长度变化的测定及临床意义

杨晨, 齐欣, 李叔强, 刘建国

吉林大学第一医院骨关节二科|吉林长春 130021

收稿日期:2008-08-18 出版日期:2009-07-28 发布日期:2009-08-24
通讯作者: 刘建国 E-mail:jgliu.2005@yahoo.com.cn
作者简介:杨晨（1974-）|男|吉林省长春市人|主治医师|医学博士|主要从事肩膝疾病诊治的研究。
基金资助:
吉林省科技厅科研基金资助课题（200705115）

Determination of length change of IGHL in vivo during shoulder abduction and clinical significances

YANG Chen, QI Xin, LI Shu-Qiang, LIU Jian-Guo

Department of Orthopedic Surgery,First Hospital,Jilin University| Changchun 130021,China

Received:2008-08-18 Online:2009-07-28 Published:2009-08-24

摘要/Abstract

摘要：

目的：应用MRI和3D软件，分析正常人体肩关节外展时下盂肱韧带前束（AIGHL）、腋囊（axillary pouch）及下盂肱韧带后束（PIGHL）的长度变化。方法：MRI扫描14例健康男性自愿者的右侧肩关节。每人共扫描7个等角度的外展位置（0°、30°、60°、90°、120°、150°和180°）。所得MRI影像资料经图像分割、体素图形配准技术，确定各韧带起止点位置并构建3D模型。用软件计算各韧带在不同外展位置时的长度变化。结果：与其他外展角度比较，AIGHL在外展120°时达到最大长度(54.5 mm±3.0 mm)(P<0.05)，此时其位于盂肱关节的正前方；与其他外展角度比较，腋囊和PIGHL在外展180°时达到最大长度(54.5 mm±3.0 mm,50.6 mm±3.1 mm)(P<0.05)，此时它们分别位于盂肱关节的前方和下方。结论：正常人体肩关节外展过程中，AIGHL在120°时起到了主要的前方稳定作用。外展180°时，腋囊维持着盂肱关节前方的稳定，同时PIGHL维持着下方的稳定。

关键词: 肩关节；外展；下盂肱韧带；磁共振成像

Abstract:

Objective To study the length changes of the inferior glenohumeral ligament(IGHL) during shoulder abduction with MRI and 3D software.Methods Fourteen right shoulder joints of 14 healthy volunteers were evaluated in 7 isometric abduction positions (0°,30°,60°,90°,120°,150°,and 180°) using MRI scanning.3D shoulder models were reconstructed and the attachment points of the ligaments were located.The shortest ligament lengths were calculated between each origin and insertion in 3D space for each abduction position.Results During shoulder abduction,the 3D distance of AIGHL was found to elongate and attained the maximal length at 120° abduction(54.5 mm±3.0 mm) (P< 0.05).Pouch and PIGHL reached the maximal lengths at 180° abduction(54.5 mm±3.0 mm,50.6 mm±3.1 mm) (P< 0.05).Conclusion AIGHL prevents anterior dislocation of the humeral head at 120° abduction.In 180° abduction,pouch can maintain the anterior stability and PIGHL has the contribution to the inferior stability.

Key words: shoulder joint, abduction, inferior glenohumeral ligaments, magnetic resonance imaging

中图分类号:

R322.72

杨晨, 齐欣, 李叔强, 刘建国. 外展时下盂肱韧带长度变化的测定及临床意义[J]. J4, 2009, 35(4): 710-713.

YANG Chen, QI Xin, LI Shu-Qiang, LIU Jian-Guo. Determination of length change of IGHL in vivo during shoulder abduction and clinical significances[J]. J4, 2009, 35(4): 710-713.