A weak or fatigued Serratus Anterior may not allow for adequate Scapulohumeral Rhythm compromising proper shoulder mechanics. Weak or fatigued serratus anterior can fail to adequately protract and upwardly rotate the scapula which may not allow for adequate subacromial space for the biceps tendon and rotator cuff and maintaining ideal spacing between the humeral head and the glenoid fossa (Tovin 2006).
Also see Swimming Injuries (shoulder/overuse and fatigue/example).
A Winged Scapula condition is indicative of a serratus anterior weakness.
– Example preventative/corrective exercise:
– Incline Shoulder Raise
