Frozen shoulder
A frozen shoulder, also known as adhesive capsulitis, is a joint problem that causes stiffness, pain, and loss of motion in the shoulder. This may lead to a severe disability and cause prolonged pain if left untreated.
The reasons behind the frozen shoulder condition are unknown. However, it may occur because of immobilization of the shoulder for a long, long time due to injury, surgery, or illness. In many cases, the cause is obscure. However, with proper treatment, you can usually unfreeze the shoulder. The recovery takes time and patience.
The shoulder has a broader range of motion than any other part of the body. It is a ball-and-socket joint, which enables the shoulder to move forward or backwards and allows the arm to rotate and extend outward. The synovial fluid lubricates the joints and helps them to move smoothly. Various muscles and tendons stabilize the shoulder and control its movements. They are known as the rotator cuff. This elaborate architecture of soft tissue allows for the shoulder's flexibility, but it also makes it vulnerable to wear and tear and trauma.
Anatomy of a frozen shoulder:
Usually, the head of the humerus moves smoothly in the glenoid cavity, a depression in the scapula. A shoulder is considered frozen when the capsule protecting the glenohumeral joint contracts and stiffens. Adhesions may also form between joint capsules and the head of the humerus.
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