Arthroscopy is a surgical technique that involves the introduction of a small circular lens (2.0 to 6.0 mm in diameter) into a joint for the purpose of inspection and possible treatment. The arthroscope is an elongated tube possessing a series of lenses that allow for the magnification of structures within the joint.
Traumatic injuries also include damage to or destruction of. personal appliances, such as eyeglasses or hearing aids, when a personal injury. requiring medical services occurred. An occupational disease or illness is a condition produced by the work environment.
1 Both closed and open head injuries can produce a concussion. A concussion is the most common type of traumatic brain injury.  A person may or may not experience a brief loss of consciousness (not exceeding 20 minutes).