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Torn rotator cuff tendons |
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Inflammation of the tendon(s) - Tendonitis |
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Impingement syndrome |
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Causes
A quick throw or serve can cause a tear of a tendon or repetitive throwing, serving; bowling can produce a cumulative tear. In these situations the affected tendons can become swollen and thickened, which is known as Tendonitis.
A fall onto the shoulder or an over stretch can also cause this, and other structures can also be damaged simultaneously in these cases.
The enlarged tendons can be pinched between the ball of the shoulder and an overlying shelf of bone, which is part of the shoulder blade. This occurs particularly in movement above 90 degrees. The pinching is known as impingement syndrome.
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