Aaron Hellem1, Matthew Shirley2, Nathan Schilaty2,3, Diane Dahm2. 1. Department of Physical Medicine and Rehabilitation, Sports Medicine Center at Mayo Clinic Square, Mayo Clinic, 600 Hennepin Avenue #310, Minneapolis, MN, 55403, USA. hellem.aaron@mayo.edu. 2. Department of Orthopedic Surgery, Sports Medicine Center, Mayo Clinic, Rochester, MN, USA. 3. Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
Abstract
PURPOSE OF REVIEW: Overhand (OH) throwers demonstrate a unique motion profile of the shoulder joint complex. This manuscript reviews normal adaptations in the OH thrower and contrast findings with pathologic motion deficits. RECENT FINDINGS: Multiple adaptations in range of motion have been associated with increased risk for arm injury. The use of a more conservative cutoff value for glenohumeral internal rotation deficit and horizontal adduction in younger throwers may help reduce injury risk. Deficits in glenohumeral internal rotation, total range of motion, shoulder flexion, and external rotation insufficiency have all been proposed as means to identify OH throwers at risk for arm injury, but conflicting evidence exists. Understanding normal adaptation due to repetitive stress of throwing is essential to effective management of these athletes. Adaptive change in bone and soft tissues is normal and contributes to the unique motion profiles expected in throwers. The causative link between normal adaptation and shoulder and elbow injury remains uncertain.
PURPOSE OF REVIEW: Overhand (OH) throwers demonstrate a unique motion profile of the shoulder joint complex. This manuscript reviews normal adaptations in the OH thrower and contrast findings with pathologic motion deficits. RECENT FINDINGS: Multiple adaptations in range of motion have been associated with increased risk for arm injury. The use of a more conservative cutoff value for glenohumeral internal rotation deficit and horizontal adduction in younger throwers may help reduce injury risk. Deficits in glenohumeral internal rotation, total range of motion, shoulder flexion, and external rotation insufficiency have all been proposed as means to identify OH throwers at risk for arm injury, but conflicting evidence exists. Understanding normal adaptation due to repetitive stress of throwing is essential to effective management of these athletes. Adaptive change in bone and soft tissues is normal and contributes to the unique motion profiles expected in throwers. The causative link between normal adaptation and shoulder and elbow injury remains uncertain.
Entities:
Keywords:
Injury risk; Motion deficit; Normal adaptation; Overhead athlete; Range of motion; Shoulder
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