Subluxations most often occur as the result of trauma to a joint. There may be predisposing factors that increase the risk of subluxation, such as older age or participation in contact sports. Traumatic causes of joint subluxation include: Blunt force injuries: Including motor vehicle accidents, sports injuries, or a severe fall Overuse injuries: Including those associated with medial epicondylitis (golfer's elbow) or patellar tendonitis (jumper's knee)10 Joint hyperextension: An injury that occurs when a joint is hyperextended (extended beyond its normal range of motion)