肩锁关节韧带损伤的磁共振成像评价

The MRI feature of the acromioclavicular joint ligament injury

目的探讨肩锁关节韧带(ACJL)损伤的磁共振成像(MRI)影像表现和诊断价值。方法收集自2009年4月至2013年8月间共52例经手术及临床治疗证实的肩锁关节韧带损伤患者的MRI检查,对ACJ韧带损伤的核磁共振表现进行观察分析并按Tossy标准进行分级。结果 52例ACJL损伤中Ⅰ级损伤19例,表现为肩锁韧带部分撕裂。Ⅱ级损伤19例,表现为肩锁韧带完全撕裂,伴有喙锁韧带的扭伤或部分撕裂。Ⅰ至Ⅱ级5例。Ⅲ级损伤9例,表现为肩锁韧带和喙锁韧带完全撕裂。ACJL损伤的间接征象主要有肩锁关节间隙增宽、关节囊积液、邻近骨折及骨与周围软组织挫伤等。结论 MRI对ACJL损伤的显示率高,并能进行准确分级,具有较高的临床应用价值。

Objective To explore value of MRI in the diagnosis of acromioclavicular joint ligament injury. Methods Collected from April 2009 to August 2013, a total of 52 cases were confirmed by operation and clinical treatment of acromioclavicular joint ligament（ACJL） injury. Analyse ligament ACJL damage of nuclear magnetic reso-nance （NMR） performance and classificate to Tossy standards. Results In 52 cases of ACJ damage, 19 cases of gradeⅠinjury showed the acromioclavicular ligament torn part. Nineteen cases of grade Ⅱinjury showed as the acromio-clavicular ligament tear accompanied by beak lock completely torn ligament sprain or part, Between Ⅰ ~ Ⅱ level for 5 cases, Ⅲ damage level for 9 cases characterized by the acromioclavicular ligament and beak lock completely torn ligament.ACJ ligament damage of indirect signs were broadening ACJ clearance, articular effusion, adjacent fracture and bone and the surrounding soft tissue contusion and so on. Conclusion The display rate of MRI for ACJL injury is high, and can be accurately graded, which has high clinical value.