Skip to content

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...

Rotator Cuff

The rotator cuff is a group of four muscles with tendons that drape over and attach to the humeral head. They contribute to the stability of the shoulder and play a large role in raising the arm. The cuff muscles or tendons may be torn or bruised by a traumatic event,...

Impingement

There is a “bony and ligament archway” in the shoulder that is comprised of the top of the arm bone and the end of the shoulder blade. The rotator cuff muscles are located in and travel below this archway when the arm is raised. Certain conditions can cause the...