Impingement syndrome of the shoulder joint
In impingement syndrome, the space between the bony acromion and the muscle cuff above the humeral head (the subacromial space) is reduced because of a congenital hook-shaped acromion.
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Tear of a muscle of the rotary cup (rotator cuff rupture)
The rotator cuff is responsible for the strength of the shoulder during overhead work. It consists of a total of four tendons. The main tendon is the supraspinatus tendon, which is most commonly affected by injury.
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Inflammation of the shoulder capsule, followed by shoulder stiffness
A nonbacterial inflammation of the shoulder capsule causes a progressive limitation of shoulder movements until the joint stiffens completely. Three stages are known: the freezing process, the frozen state, and the thawing process.
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Tendon calcification (tendinosis calcarea)
Calcification of the muscle cuff above the humeral head may, depending on the degree of activity, lead to major complaints of the shoulder involved.
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