Dislocations and Sprains Articulated joints keep their stability thanks to the muscles, tendons and ligaments. If the articular joints, usually because of a sudden trauma, lose their correlation, or exceed the limits of their extension, the joint will undergo DISLOCATION if the loss is permanent in time or a SPRAIN, if the loss is momentary (it could be for tenths of a second, but enough to cause damage).
First Aid - Sprains A sprain occurs when a violent twist or stretch causes a joint to move outside its normal range.
Limb Injuries Limb injuries can involve damage to bones, joints, ligament, musles, the major blood vessels and nerves of the limb.
Sprains, Fractures and Dislocations A sprain is an injury to the soft tissue (ligaments) around a joint. A fracture is a broken bone. An open fracture is a broken bone that pokes through the skin. A dislocation is when the bone comes out of the socket.