November 18th, 2011 by Paul Auerbach, M.D. in Research
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Ski season is upon us. Many experts (including myself) are of the opinion that helmets should be worn by all downhill skiers and snowboarders to help prevent head injuries. One of the “con” arguments proposed by some persons who object to wearing helmets is that they interfere with skiing in such a way as to perhaps make it more dangerous. In their opinion, this might occur by obscuring peripheral vision or diminishing the perception of sound. A very important article entitled “Do Ski Helmets Affect Reaction Time to Peripheral Stimuli?” (Wilderness & Environmental Medicine:22,148-150,2011) has recently been published by Gerhard Ruedl and colleagues from the Department of Sports Science at the University of Innsbruck in Austria.
The investigators sought to determine whether or not ski helmet use affects reaction time to peripheral stimuli. They used the Compensatory-Tracking-Test (CTT) in a laboratory situation to study 10 men and 10 women during four conditions in a randomized order: Read more »
This post, Study Looks At The Effectiveness Of Ski Helmets In Preventing Head Injuries, was originally published on
Healthine.com by Paul Auerbach, M.D..
January 15th, 2010 by Paul Auerbach, M.D. in Better Health Network, Health Tips
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We’re in ski season and so a few unfortunate individuals will suffer few knee injuries. A while back, a reader asked me to describe an uncommon injury, which is a torn posterior cruciate ligament (PCL).
This injury usually occurs during a fall. As you can see from the drawing, the PCL keeps the lower leg bone (tibia) from moving too far back in relation to the upper leg bone (femur). If a sudden unnatural force is applied, usually a direct blow to the front of the lower leg near the knee while the knee is bent, the tibia is jammed backwards and the PCL may be torn. In the skiing situation, this usually happens during a fall and a tumble, when someone strikes an immovable object, or when the knee is bent or “twisted” and struck forcefully from the side.
The immediate sensation is pain, and there may be a feeling of instability to the knee, particularly when trying to walk or change levels (e.g., walk over the snowpack or on stairs). When the injury occurs, there usually is not the “pop” sensation noted with an anterior cruciate ligament tear. However, the knee will almost always swell, because there is bleeding into the knee joint and/or soft tissue swelling. Read more »
This post, Ski Season, Knee Injuries, And Posterior Cruciate Ligament Tears, was originally published on
Healthine.com by Paul Auerbach, M.D..
