If your shoulder hurts or feels stiff when you reach up to take an item from a shelf, you may have shoulder, or AC arthritis. This is arthritis that occurs in your acromioclavicular, or AC, joint. Your AC joint is between your collar bone, or clavicle, and a part of your shoulder blade called the acromion. Your other shoulder joint is the glenohumeral joint, which is located between your arm and shoulder blade. Arthritis can occur in either joint, but it’s more common in the AC joint.
Online Medical Reviewer: Foster, Sara, RN, MPH
Online Medical Reviewer: newMentor board-certified, academically affiliated clinician
Arthritis refers to a group of disorders that involve the body’s joints and have similar symptoms, including pain, stiffness, and swelling. Learn about the different types of arthritis and their treatment.
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Bursitis is an inflammation of a closed sac of fluid located near the joints called a bursa. When the bursa becomes inflamed, it causes joint pain and swelling. Learn about the causes and treatment of bursitis, as well as what you can do to help prevent its recurrence.
Frozen shoulder is a painful condition that usually results in decreased range of motion of the shoulder joint. It may develop gradually or suddenly and severely. This video offers information on how frozen shoulder occurs, who's at risk, and what treatments are available.
