Football is a high-contact sport that carries risks of various injuries. Head injuries such as concussions have been increasing in soccer. Heading the ball poses risks especially for younger players. Spinal injuries to the cervical and lumbar spine can occur from falls or tackles, though are generally rare. Common injuries elsewhere include shoulder dislocations, groin strains, thigh muscle injuries, knee ligament tears such as ACL injuries, ankle sprains, and foot injuries from player contact or repetitive stress. Physician coverage is often required at games to address these sorts of soccer-specific injuries.