(sprains, muscle strains, joint injuries, and fractures/broken bones, stitches/sutures)
An acute injury is a sudden injury. Acute injuries associated with a traumatic event such as one player hitting another in a contact sport or an injury resulting from a fall (some form of trauma). A traumatic injury can cause cuts to skin, muscles and ligaments to sprain or strain, injury to a joint (toe, ankle, knee, hip, shoulder, elbow, wrist, finger) or joint disclocation, or can cause a bone to break (fracture).
Acute injuries often involve sudden and severe pain, inability to bear weight or use affected area, tenderness, swelling, inability to move the affected area, weakness or a visible deformity.