Chen J D, Jim Y F, Chang C Y
Department of Radiology, Veterans General Hospital-Taipei, Taiwan, R.O.C.
Zhonghua Yi Xue Za Zhi (Taipei). 1996 Sep;58(3):198-204.
Rotator cuff tears usually derive from shoulder impingement, and need surgical treatment. This study is to verify the Magnetic Resonance Image (MRI) findings of rotator cuff impingement which are related to full-thickness rotate cuff tear (FTRCT).
Totally 68 patients with shoulder impingement syndrome were studied, including 39 shoulders with surgically-proven FTRCT, and 29 shoulders without FTRCT. MRI findings of shoulder impingement were evaluated for peribursal fat plane, subacromial distance, acromion shape, subacromioclavicular space, irregularity of coracoacromial ligament and presence of subacromial spurs. The correlation with FTRCT was also determined.
Peribursal fat plane obliteration (p = 0.0001), hook-shaped acromion (p = 0.0148), subacromioclavicular indentation (p = 0.0004), and decreased subacromial distance (p = 0.0005) showed significant correlation with FTRCT; however, subacromial spurs (p = 0.6238) and thickened irregular coracoacromial ligament (p = 0.1611) showed poor correlation.
Specific MRI findings of rotator cuff impingement are fairly reliable and helpful for discrimination of FTRCT from non-FTRCT cases, and can be used preoperatively and noninvasively to determine the necessity of surgical repair of rotator cuff.
肩袖撕裂通常源于肩部撞击，需要手术治疗。本研究旨在验证与全层肩袖撕裂（FTRCT）相关的肩袖撞击的磁共振成像（MRI）表现。
共研究了68例肩部撞击综合征患者，其中39例肩部经手术证实为FTRCT，29例肩部无FTRCT。对肩部撞击的MRI表现进行评估，包括滑囊周围脂肪平面、肩峰下间隙、肩峰形态、肩锁关节下间隙、喙肩韧带不规则以及肩峰下骨赘的存在情况。还确定了与FTRCT的相关性。
滑囊周围脂肪平面消失（p = 0.0001）、钩形肩峰（p = 0.0148）、肩锁关节下凹陷（p = 0.0004）和肩峰下间隙减小（p = 0.0005）与FTRCT显著相关；然而，肩峰下骨赘（p = 0.6238）和增厚不规则的喙肩韧带（p = 0.1611）相关性较差。
肩袖撞击的特定MRI表现相当可靠，有助于区分FTRCT与非FTRCT病例，可在术前无创地用于确定肩袖手术修复的必要性。
