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Dr Oshimi's Healthy Lifestyle : File01 (Dec. 2004, Xene#43)
Shredding the Hill and
Not Your Bones
The skiing and snowboarding season is around the corner in Hokkaido. Over the past few seasons, you may have noticed more and more snowboarders on the hills, or maybe you're one of them.
Like downhill skiing, snowboarding is a blast, but a botched 720 is no fun at all when it means using your face as a landing pad. Japanese hospitals report that the injury rate for snowboarding is much higher than for skiing. One reputable hospital has reported that the injury rate for boarders is 1:500 compared to 1:2000 for skiers. This month, I have some tips for safe "shredding": riding with speed and style.

WRIST INJURIES

The most common injury in snowboarding is to the wrist. Unlike skiers, who can step out when they lose their balance, snowboarders are more likely to topple over and the natural tendency is to fall onto an outstretched hand. (Hence the ER term kabai-te, "the hand used to break the fall.") Wrist fractures caused by this action are often not simple injuries and can lead to long-term disability.
One way of reducing the risk of injury is to keep your arms tucked into your sides and your fists clenched. It's better to roll out of a fall, distributing impact over a greater portion of the body. In addition, it's highly recommended that you purchase wrist guards. You can get them for about \2000 at a sporting goods store, well worth the price.

KNEES AND ANKLES

The rate of serious knee injuries in snowboarding is lower than in skiing. This is because both feet are connected to the board, protecting the knees. The ankle is more commonly injured by snowboarders. For beginners, hard boots are related to a higher incidence of ankle injuries than soft boots. The latter allow some ankle movement, which helps novices to maneuver the board and avoid sprains.
Serious ankle injuries are particularly common after jumping, when a combination of compression and inversion forces is experienced. This may lead to ankle sprain or to the more serious "snowboarder's ankle," a fracture of the lateral process of the talus bone (LPT) in the ankle. It presents as a severe sprain, usually with pain in the area indicated to just under the bone on the outside of your ankle. Unfortunately, it may not show on a normal x-ray, and many Japanese doctors outside of ski areas haven't heard of it. It may need a CT scan to diagnose, and an operation is required. If any snowboarders with an ankle injury have severe pain or can't support their weight on the ankle after a week, they need to seek medical attention and mention this injury. It carries a high risk of morbidity if not managed appropriately.

HEAD INJURIES

Head injuries are usually caused by falling. Beginners tend to fall on the back edge and bang their heads on the snow as a result. Most head injuries are thankfully minor. However, a subdural hematoma has a high risk of long-term disability or even death. If you hit your head and have a headache with a partial loss of consciousness, you may have a hemorrhage just under the hard membrane of your brain. This requires immediate medical attention.

IF INJURED...

If you've injured yourself, find the nearest ski patrol. They'll bring you to a treatment room or they'll call an ambulance to take you to the nearest hospital. After getting home from the hill, if you suspect you've injured yourself, go directly to the orthopedic department (seikei-geka). Don't forget that the injury may lead to long-term disability without proper treatment.
Many snowboarders learn from their friends. This can be a risky choice of teachers and can lead to dangerous habits. Beginner boarders should take lessons from a pro. They should master the correct riding position, and how to fall properly, which help to reduce upper limb injuries and head injuries. Ankle injuries can be reduced with the use of a hybrid boot -- a softer boot with a hard inner lining, which may provide the best protection -- and don't forget that safety gear, such as a helmet, extra padding for your elbows, knees and buttocks, and wrist guards, can compensate for recklessness or protect you from other serious injuries.
Snowboarding is a wicked sport, but make sure you're the one in control.


OSHIMI Takayuki M.D.
A physician in Asahikawa
Board Member of J.E. (the Japan Association for Health Care Interpreting in Japanese and English)
Medical translating duties, including various publications
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