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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...

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...

Shoulder Anatomy

The shoulder is the most moveable joint in your body. It helps you to lift your arm, to rotate it, and to reach up over your head. It is able to turn in many directions. The shoulder joint may be described as a “ball and socket”. However it is a relatively large ball...