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AC Arthritis

General AC stands for acromioclavicular. The AC joint is where the bone at the top of the shoulder (acromion) meets the collarbone (clavicle). Anatomy The AC joint is stabilized by the acromioclavicular (AC) ligaments, the coracoclavicular (CC) ligaments, joint...

AC Separation

General “Shoulder separation” is term commonly used for an injury to the AC (acromioclavicular) joint that makes it unstable. The AC joint is where the bone at the top of the shoulder (acromion) meets the collarbone (clavicle). Injuries to the AC joint are quite...

Frozen Shoulder

General Information “Frozen shoulder,” also known as “adhesive capsulitis” is a slowly progressing, painful loss of shoulder motion due to inflammation and thickening of the capsule that surrounds the joint Occurs in 2% of the general population Most commonly occurs...

Clavicle Fracture

The clavicle, which is also known as the collarbone, is one of the most commonly broken bones among people of all age groups. The majority of clavicle fractures are treated without surgery, but a subset of fracture patterns are best addressed surgically to maximize...

Shoulder Arthritis

Anatomy and Function The shoulder joint is made up of three bones, the arm bone (humerus), the shoulder blade (scapula), and the collar bone (clavicle) The ends of the bones are covered by a slippery and shiny material called cartilage. Cartilage acts as a shock...