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.
Arthritis is a type of damage to a joint that can cause inflammation. AC arthritis affects the acromioclavicular (AC) joint. This joins the shoulder blade (scapula) and the collarbone (clavicle). AC arthritis is fairly common in older adults.
Shoulder pain can have many causes. Pain often comes from the structures that surround the shoulder joint. Pain can also come from cartilage in the joint.
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.
