A game in which two parties of players provided with curved or hooked sticks seek to drive a ball or puck through opposite goals. This applies to either ice hockey or field hockey.

A nonspecific term used to describe transient alterations or loss of consciousness following closed head injuries. The duration of UNCONSCIOUSNESS generally lasts a few seconds, but may persist for several hours. Concussions may be classified as mild, intermediate, and severe. Prolonged periods of unconsciousness (often defined as greater than 6 hours in duration) may be referred to as post-traumatic coma (COMA, POST-HEAD INJURY). (From Rowland, Merritt's Textbook of Neurology, 9th ed, p418)

Injuries incurred during participation in competitive or non-competitive sports.

Equipment required for engaging in a sport (such as balls, bats, rackets, skis, skates, ropes, weights) and devices for the protection of athletes during their performance (such as masks, gloves, mouth pieces).

General or unspecified injuries to the soft tissue or bony portions of the face.

Devices or pieces of equipment placed in or around the mouth or attached to instruments to protect the external or internal tissues of the mouth and the teeth.

Personal devices for protection of heads from impact, penetration from falling and flying objects, and from limited electric shock and burn.

General or unspecified injuries involving the leg.

Using ice skates, roller skates, or skateboards in racing or other competition or for recreation.

Personal devices for protection of the eyes from impact, flying objects, glare, liquids, or injurious radiation.

Hospital department responsible for the creating, care, storage and retrieval of medical records. It also provides statistical information for the medical and administrative staff.

Activities or games, usually involving physical effort or skill. Reasons for engagement in sports include pleasure, competition, and/or financial reward.