Use causal in a sentence. of a cause or causes. being or involving a cause. relating to cause and effect.
Causes of frozen shoulder. Frozen shoulder occurs when the sleeve that surrounds the shoulder joint, known as the capsule, becomes swollen and thickened. It's unclear why this happens. The shoulder is a ball and socket joint. The end of your upper arm bone (humerus) sits in contact with the socket of your shoulder blade (scapula).
Stages of frozen shoulder and their approximate durations are: 1  Freezing stage (6 weeks -9 months): Any shoulder movement causes pain which increases over time until range of motion becomes limited. 2  Frozen stage (4-6 months): Pain may diminish, however, loss of motion remains. 3  Thawing stage (6 months-2 years): Shoulder motion slowly improves.