Frozen shoulder and shoulder impingement are common shoulder diseases, but they are not completely the same. Frozen shoulder is usually...

Frozen shoulder, also known as adhesive capsulitis, is a condition that affects the shoulder joint. It is characterized by stiffness, pain, and limited range of motion in the shoulder. The condition occurs when the capsule surrounding the shoulder joint thickens and tightens, causing inflammation and pain. Over time, the shoulder joint can become "frozen," making it difficult to move the arm and shoulder. Frozen shoulder typically progresses through three stages: Freezing sta