Anatomy of the acromial arch: correlation of anatomy and magnetic resonance imaging.

摘要: Based on a retrospective study of 179 MRI records covering four populations (patients presenting with impingement without known injury (n=90), post-traumatic shoulder pain (n=28), instability or dislocation (n=36) and controls (n=25)), morphologic criteria are suggested to define presumedly normal arches compatible subacromial impingement. The arch is presumed if the sagittal frontal views show it be parallel humeral head, and/or there fatty layer interposed between supraspinatus m. “aggressive” actually capable giving rise if, in either view, zone narrowing passage an impression tendon tendinous thinning at this level just lateral narrowed zone. these criteria, demonstrated significant difference distribution populations. “Aggressive” were found 45.5% patients impingement, 25% posttraumatic pain, 8.9% acute recurrent 12% controls. Conversely, was 56% controls, 55% dislocation, painful shoulders only 5.5% clinical Subacromial may due type 3 acromial dysplasia described by Bigliani thickening coracoacromial ligament its attachment. This supplemented 15 anatomic dissections which confirmed regularity attachment inferior aspect acromion along border.