Posterior shoulder instability is a shoulder injury that’s more common among young men who engaged in high-contact sports. A comprehensive review concluded that in most cases, patients with posterior shoulder instability should utilize non-surgical care options for at least six months before considering a surgical procedure. The review notes that care should concentrate on proprioceptive and strengthening exercises of the subscapularis muscle and other dynamic stabilizers of the shoulder, as well as managing any co-occurring shoulder conditions, such as scapular dyskinesis. Doctors of chiropractic are trained in the diagnosis and management of several musculoskeletal conditions, including posterior shoulder instability. StatPearls, July 2022