The bones, ligaments and tendons that make up your shoulder joint are encased in a capsule of connective tissue. Frozen shoulder occurs when this capsule thickens and tightens around the shoulder joint, restricting its movement.
Doctors aren't sure why this happens to some people, although it's more likely to occur in people who have diabetes or those who recently had to immobilize their shoulder for a long period, such as after surgery or an arm fracture.
March 10, 2015
- Skinner HB. Current Diagnosis & Treatment in Orthopedics. 5th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://accessmedicine.mhmedical.com/book.aspx?bookid=675. Accessed Jan. 22, 2015.
- Frozen shoulder. American Academy of Orthopaedic Surgeons. http://orthoinfo.aaos.org/topic.cfm?topic=a00071. Accessed Jan. 22, 2015.
- Prestgaard TA. Frozen shoulder (adhesive capsulitis). http://www.uptodate.com/home. Accessed Jan. 22, 2015.
- Acupuncture. National Medicines Comprehensive Database. http://www.naturaldatabase.com. Accessed Jan. 22, 2015.
- DeSantana JM, et al. Effectiveness of Transcutaneous Electrical Nerve Stimulation for treatment of hyperalgesia and pain. Current Rheumatology Reports. 2008;10:492.
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