Nonoperative management with focused physical therapy, rest, and activity modification is considered the primary treatment for the vast majority of AC joint injuries. If the joint is very unstable, surgical repair may be indicated to improve stability of the AC joint, relieve pain, and optimize shoulder function. For patients with AC joint arthritis, an injection may also be considered. For some patients with severe AC joint arthritis that does not respond to nonoperative treatment, surgery may be an option. This is typically performed in a minimally invasive fashion with a relatively quick recovery.