A theoretical review proposing that the human shoulder's distinctive anatomy — from glenohumeral cartilage distribution to the coracoacromial ligament to the depressed greater tuberosity — can be explained as evolutionary adaptations for high-speed throwing, using kinematic force data from pitching studies to anchor each anatomic argument.
When evaluating a throwing athlete's shoulder — whether for impingement, SLAP pathology, or subtle instability — recognize that the anatomy you're working with was shaped by forces exceeding 1000 N at ball release: decisions like coracoacromial ligament release or biceps tenotomy carry implications beyond simple pain relief, potentially disrupting structures the authors argue evolved specifically to handle these loads.
A theoretical review proposing that the human shoulder's distinctive anatomy — from glenohumeral cartilage distribution to the coracoacromial ligament to the depressed greater tuberosity — can be explained as evolutionary adaptations for high-speed throwing, using kinematic force data from pitching studies to anchor each anatomic argument.
When evaluating a throwing athlete's shoulder — whether for impingement, SLAP pathology, or subtle instability — recognize that the anatomy you're working with was shaped by forces exceeding 1000 N at ball release: decisions like coracoacromial ligament release or biceps tenotomy carry implications beyond simple pain relief, potentially disrupting structures the authors argue evolved specifically to handle these loads.