Comparative cadaveric study measuring ten scapular anatomical features linked to subacromial impingement across 64 dry bone specimens from humans, gorillas, chimpanzees, and orangutans — asking whether human scapular morphology uniquely predisposes to rotator cuff tears.
When counselling patients or considering acromioplasty, remember that classical impingement anatomy (acromion shape, arch geometry) may not be the primary cause of most rotator cuff tears — this study suggests supraspinatus muscle insufficiency and intrinsic tendon failure are at least as important, which is why isolated acromioplasty without addressing cuff integrity has inconsistent outcomes.
Comparative cadaveric study measuring ten scapular anatomical features linked to subacromial impingement across 64 dry bone specimens from humans, gorillas, chimpanzees, and orangutans — asking whether human scapular morphology uniquely predisposes to rotator cuff tears.
When counselling patients or considering acromioplasty, remember that classical impingement anatomy (acromion shape, arch geometry) may not be the primary cause of most rotator cuff tears — this study suggests supraspinatus muscle insufficiency and intrinsic tendon failure are at least as important, which is why isolated acromioplasty without addressing cuff integrity has inconsistent outcomes.