Shoulder instability can be functional or anatomical and can further be divided into:
- usually not due to previous dislocation, but rather congenital joint capsule laxity
- often bilateral
- usually associated with multidirectional
As a result of this greater mobility, a number of seconday changes may become evident, including:
- subacromial spur formation
- hypertrophy of the greater tuberosity
- coracoacromial ligament hypertrophy
These changes in turn may lead to shoulder impingement.
- previous traumatic dislocation (especially anterior shoulder dislocation)
- athletes (throwing, swimming, tennis)
In general both anterior and posterior instability requires surgical repair and strengthening of the capsule.
Multi-directional instability is usually treated conservatively with rotator cuff strengthening exercises 2
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- 1. Kaplan P. Musculoskeletal MRI. W B Saunders Co. (2001) ISBN:0721690270. Read it at Google Books - Find it at Amazon
- 2. Manaster BJ, Disler DG, May DA et-al. Musculoskeletal imaging, the requisites. Mosby Inc. (2002) ISBN:0323011896. Read it at Google Books - Find it at Amazon
Synonyms & Alternative Spellings
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|Instability of the shoulder||✗|