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Institute of Advanced Orthopedics, MOSC Hospital and Medical College, Kolenchery, Ernakulam, Kerala

Shoulder dislocation with bone loss

Shoulder dislocation becomes a difficult problem to treat when the glenoid (cup) and humeral head (ball) develops bone loss due to the multiple episodes of dislocation. This page discusses the various options to deal with bone loss associated with shoulder instability.

Read about treatment of Shoulder dislocation before bone loss happensArthroscopic Bankart Surgery

Anatomy


The shoulder is a ball and socket joint and is the most mobile joint of the body. Its plays a major role in positioning your arm and hand in space. Because of its great mobility, it is inherently at risk for instability.
The socket of the shoulder (the glenoid) is part of the shoulder blade or scapula. The ball is part of the arm bone or humerus. The socket is rather shallow which allows for the wide range of motion that the shoulder requires. Around the socket is a soft tissue called the labrum (Latin for lip). Think of this rim of tissue as an O-ring that lines the edge of the bony socket. It is attached to the shoulder capsule. One of its main jobs is to help keep the ball centered in the socket during shoulder motion. When the shoulder dislocates, it is usually this labrum or rim of tissue which tears from socket. Shoulder instability occurs when the ball, or humerus head, is forced out of the shoulder socket (glenoid). This can happen during a sudden injury. Once a shoulder has dislocated, further dislocations may occur over time. When the shoulder is in this loosened state and multiple dislocations occur, it is referred to as chronic shoulder instability.

Typically, this results in damage and stretching of the ligaments and labrum of the shoulder. In some cases, though,
this results in damage to the bony socket which is a more severe form of shoulder instability. When the bony socket
is damaged, instability can be much more profound.

Useful Link:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4437927/

http://www.clevelandshoulder.com/articles/arthro-latarjet.pdf

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