Posterior shoulder instability typically results from a dislocation injury to the shoulder joint when the humeral head (ball) of the humerus (upper arm bone) is displaced from its normal position in the center of the glenoid (socket) and the joint surfaces no longer touch each other. The most common dislocation is anterior (more than 90 percent), where the humeral head is in front and below the glenoid. With falls on an outstretched hand in front of the body, a posterior shoulder dislocation can occur.
Dr. Steven Chudik serves the greater Chicagoland area and has offices in Chicago’s western suburbs. This information is provided by Dr. Chudik and not to be used for diagnosis and treatment. For a proper evaluation and diagnosis, Dr. Chudik can be contacted at firstname.lastname@example.org/, or at 630-324-0402.
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