喙锁韧带的影像学分析

目的 研究喙锁韧带的影像学表现.方法 选取正常胸部正位CR片400例,其中男、女各200例,观察喙锁关节和喙锁韧带附着处锁骨粗隆显示率,测量喙锁韧带部喙突和锁骨间距.选取正常肩关节MRI 30例,观察喙锁韧带显示率和测量喙锁韧带长度和宽度;选取临床已证实的肩锁关节Ⅱ、Ⅲ级损伤MRI检查8例.结果 400例800侧中见1例(0.25%)存在喙锁关节.198 侧(198/800;24.8%)显示喙锁韧带锁骨附着处粗隆存在.正常喙突锁骨间距为(6.92±3.16) mm.30例正常人MRI斜冠状扫描均可显示喙锁韧带,其锥状韧带长度(11.48±1.43) mm,宽度为(4.82±1.21) mm,梯状韧带长度(9.09±0.84) mm,宽度为(5.10±0.87) mm.肩锁关节损伤8例,MR检查发现:肩锁关节Ⅱ级损伤肩锁韧带撕裂,Ⅲ级损伤并喙锁韧带撕裂.结论 本文建立了正常喙锁韧带的X线和MRI测量标准,为诊断喙锁韧带等疾病提供了依据,肩锁关节Ⅲ级损伤有喙锁韧带撕裂.

Imaging Analysis of Coracoclavicular Ligament

Objective To study the imaging finding of the coracoclavicular ligament.Methods 400 cases of normal chest films 200 men and 200 women were collected.The presented rates of pseudoarthrosis of the coracoclavicular joints and the clavicular tuberosities which are the coracoclavicular ligament attachment were evaluated and the distances between the clavicle and coracoid process interval were measured.There were 30 cases of normal shoulder MRI,the displaying rate of coracoclavicular ligament, the length and width of the coracoclavicular ligament were measured at MR imaging.8 case with type Ⅱ(n=5) and type Ⅲ(n=3)of acromioclavicular injury were also included in this study.Results Among 400 cases(800 sides),one pseudoarthrosis(0.25%)and 198 clavicular tuberosities(24.8%)were found.The normal distance between the clavicle and coracoid process interval was (6.92±3.16)mm.On MRI study,30 cases of coracoclavicular ligament were all showed on oblique coronal slices. The acromioclavicular ligament and coracoclavicular ligament tear were found in type Ⅱ and type Ⅲ,of acromioclavicular injury respectively on MRI.The length and width of conoid ligament were(11.48±1.43) mm and (4.82±1.21) mm respectively,and the length and width of trapezoid ligament were(9.09±0.84) mm and (5.10±0.87) mm respectively.Conclusion The normal anatomic measurement standards of the coracoclavicular ligament are established on X-ray and MRI,which is important for diagnosis of coracoclavicular ligament lesions.The coracoclavicular ligament torn is showed in typeⅢ of acromioclavicular dislocation.