Open injuries occur when the skin is broken, usually allowing blood to escape

Closed injuries happen under the skin

1. Bruising – damage to blood vessels

2. Strained (pulled) muscles – tears in tissues, caused by overstretching

3. Sprains – joint injuries, where the ligament has been stretched or torn

4. Dislocation – joint injuries, where the bone is pulled out of its usual position

5. Cartilage – can be torn by violent impact such as twisting