Gallo Robert A, Sciulli Robert, Daffner Richard H, Altman Daniel T, Altman Gregory T
Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, PA 15212, USA.
Clin Orthop Relat Res. 2007 May;458:70-7. doi: 10.1097/BLO.0b013e31803bb400.
The purpose of our study was to correlate radiographic characteristics with rotator cuff tendon injury on magnetic resonance imaging after fractures of the proximal humerus. We prospectively obtained magnetic resonance imaging on 30 patients with proximal humerus fractures after classifying each fracture radiographically using Neer and AO systems and determining the displacement of the greater tuberosity. Twelve patients (40.0%) had either complete ruptures or avulsions of at least one of the rotator cuff muscles. No abnormality was identified in the rotator cuff musculature in nine patients (29%). Severity of injury to the rotator cuff tendons increased substantially with respect to increasing AO and Neer classes and 5 mm or greater displacement of the greater tuberosity fragment. Additional study is needed to determine the exact role of rotator cuff tendon injury in the ultimate function attained by patients with proximal humerus fractures.
我们研究的目的是在肱骨近端骨折后，将磁共振成像上的影像学特征与肩袖肌腱损伤相关联。我们前瞻性地对30例肱骨近端骨折患者进行了磁共振成像检查，先用Neer和AO系统对每个骨折进行影像学分类，并确定大结节的移位情况。12例患者（40.0%）至少有一块肩袖肌肉发生完全断裂或撕脱。9例患者（29%）的肩袖肌肉组织未发现异常。随着AO和Neer分类的增加以及大结节碎片移位5mm或更多，肩袖肌腱损伤的严重程度显著增加。需要进一步研究以确定肩袖肌腱损伤在肱骨近端骨折患者最终功能恢复中的确切作用。
