The socket of the shoulder joint is extremely shallow and inherently unstable. The shoulder joint has a ring of cartilage around the socket called a labrum that forms a deeper cup for the ball portion of the upper arm bone (humerus) to compensate for the shallow socket. This ring of cartilage increases stability of the shoulder joint, yet allows for a wide range of movements.
Bankart Lesion Tear Injury
The bankart lesion is a common cause of instability in the shoulder. This kind of tear can occur from stress on the front of the shoulder when performing overhead activities like throwing or serving a tennis ball. Another way to develop a bankart lesion is when a shoulder dislocates.
Bankart Lesion Tear Symptoms
Symptoms of a bankart lesion often include a sense of instability and aching in the shoulder. The patient usually experiences repetition of the dislocation or a catching sensation in the shoulder.
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