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A wide range of injuries occur in snow skiing. Knee injuries are very common, particularly injuries of the anterior cruciate ligament. Because skiers frequently put their arms out to break a fall, shoulder injuries — such as dislocations and sprains — often occur. Fractures around the shoulder and lower leg are common. Skiers who fall on an outstretched hand while holding a ski pole can get a "skier's thumb." Head injuries also occur in skiing, and can be especially serious.

Several strategies can help prevent ski injuries, such as having the appropriate equipment and choosing ski runs that match your ability level. Taking ski lessons is especially important for new skiers. Learning how to fall correctly and safely can reduce the risk of injury. Even experienced skiers can improve by taking a lesson.

Avoid injury by wearing appropriate gear and making sure that you are physically ready for the slopes.
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• Maintain fitness. Be sure you are in good physical condition when you set out on a ski outing. If you are out of shape, select ski runs carefully and gradually build your way up to more challenging trails. Many ski injuries happen at the end of the day, when people try to get in one last run before the day's end. The majority of these injuries can easily be prevented if you prepare by keeping in good physical condition and stopping when you are tired or in pain.
• Warm up. Research studies have shown that cold muscles are more prone to injury. Warm up with jumping jacks, running or walking in place for 3 to 5 minutes. Take a couple of slow ski runs to complete your warmup.
• Hydrate. Even mild levels of dehydration can affect physical ability and endurance. Drink plenty of water before, during, and after skiing.
• Know safety rules. Understand and abide by all rules of the ski resort. Know general safety rules of skiing, such as how to safely stop, merge, and yield to other skiers.
• Learn ski lift safety. Before your outing, know how to properly get on and off a lift.

• Wear several layers of light, loose and water- and wind-resistant clothing for warmth and protection. Layering allows you to accommodate your body's constantly changing temperature.
• Buy or rent boots and bindings that have been set, adjusted, maintained and tested by a ski shop that follows American Society of Testing and Materials (ASTM) standards.
• Check the binding of each ski before skiing. The bindings must be properly adjusted to your height, weight, and skiing ability.
• Wear appropriate protective gear such as goggles and a helmet. Helmets are sport-specific, so do not wear a bike helmet on the slopes. Ski helmets should be worn.

• Stay on marked trails and avoid potential avalanche areas.
• Watch out for rocks and patches of ice on ski trails.
• Pay attention to warnings about upcoming storms and severe drops in temperature. Make adjustments for icy conditions, deep snow, powder, and wet snow.

• Skiers should ski with partners and stay within sight of each other. If you get ahead of your partner, stop and wait.
• Use good judgment on the slopes, particularly at the end of the day when you may be fatigued. Do not attempt the most difficult run of the day when you have already spent a full day on the slopes.
• Seek shelter and medical attention immediately if you, or anyone with you, is experiencing hypothermia or frostbite. Make sure everyone is aware of proper procedures for getting help if injuries occur.