Frozen shoulder is when the shoulder is painful and loses motion because of inflammation.
Causes, incidence, and risk factors
The joint capsule of the shoulder joint has ligaments that hold the shoulder bones to each other. When the capsule becomes inflamed, the shoulder bones are unable to move freely in the joint.
Most of the time there is no cause for frozen shoulder. However, risk factors include:
- Cervical disk disease of the neck
- Shoulder injury
- Shoulder surgery
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