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Shoulder Instability

Shoulder (glenohumeral) Instability   Shoulder instability refers to excessive movement of the head of humerus (the “ball”) in the glenoid fossa (the “socket”), which can result in pain, dysfunction, loss of movement and loss of strength.  The shoulder joint is designed to allow great flexibility, but the trade-off is the glenoid fossa (the “the socket”) is very shallow predisposing the shoulder to instability.  The common analogy used to describe the shoulder joint is that it is like a golf ball sitting on a ... Read more