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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...

Anterior Instability

General Information The shoulder is the body’s most mobile joint. The same anatomy that gives the shoulder its amazing mobility and range of motion also makes it vulnerable to dislocating or becoming unstable, a condition called instability. Instability is a catch-all...

Posterior Instability

General Information The shoulder is the body’s most mobile joint. The same anatomy that gives the shoulder its amazing mobility and range of motion also makes it vulnerable to dislocating or becoming unstable, a condition called instability. Instability is a catch-all...