What is a condition in which the joint capsule thickens and contracts,causing pain and stiffness?

A) low-back pain
B) osteoarthritis
C) frozen shoulder
D) rheumatoid arthritis

Joint Capsule

A sac-like structure that surrounds a joint, providing the joint with stability and keeping the synovial fluid that lubricates the joint contained.

Frozen Shoulder

A condition characterized by stiffness and pain in the shoulder joint, leading to a decreased range of motion.

Stiffness

A physical condition in which muscles feel tight and movement is restricted, often resulting from exercise, injury, or long periods of inactivity.