An injury is defined as physical harm or damage to the body and may result in a death. Injuries are caused by acute exposure to physical agents (e.g. mechanical force or energy heat, electricity, chemicals, and ionizing radiation) and/or a sudden lack of an essential substance (e.g. oxygen in the case of drowning) in amounts or at rates that exceed the threshold of human tolerance. See below for injury types and causes.

A sudden or violent twist or wrench of a joint causing the stretching or tearing of ligaments and often rupture of blood vessels with hemorrhage into the tissues; also : the condition resulting from a sprain that is usually marked by swelling, inflammation, hemorrhage, Joint dislocation and discoloration

Sternum - a compound ventral bone or cartilage that lies in the median central part of the body of most vertebrates above fishes and that in humans is about seven inches (18 centimeters) long, consists in the adult of three parts, and connects with the clavicles (Sterno -Clavicular Joint) and the cartilages of the upper seven pairs of ribs -- called also breastbone

Bodily injury from excessive tension, effort, or use, especially : one resulting from a wrench or twist and involving undue stretching of muscles or ligaments

Swan Neck Deformity - a deformed position of the finger, in which the joint closest to the fingertip is permanently bent toward the palm while the nearest joint to the palm is bent away from it (DIP hyperflexion with PIP hyperextension). It is commonly caused by injury or inflammatory conditions like rheumatoid arthritis or sometimes might be familial (congenital). Boutonniere Finger - refers to a finger which is bent in a particular way: bent down at the middle joint and bent back at the end joint: usually due to an injury, although it can develop in inflammatory disorders such as rheumatoid arthritis . Also, some people are born with a mild boutonniere posture of most or all of their fingers.