Although most commonly associated with military combat, post-traumatic stress disorder (PTSD) can occur in civilians, too - and with consequences that are just as serious, according to a new review article in the Journal of the American Academy of Orthopaedic Surgeons (JAAOS). PTSD is a type of anxiety disorder that occurs after a person experiences a traumatic event involving physical injury, and occurs in 20 to 51 percent of patients with an orthopaedic injury.