Sports injuries: basics, common injuries and their treatment Sports injuries have been classically defined as a new or recurring musculoskeletal complaint, or concussion incurred during competition or training, receiving medical attention, regardless of time loss from competition or training. It has been classified in different ways like Direct/Indirect, Contact/Non- contact sports, Minor/Major. Usually, common sports injuries are mild or moderate. It generally occurs for two different reasons: trauma and overuse. Traumatic sports injuries are usually obvious and may be due