The myth of running limb varus.
Even though the authors believe that there are many flaws in treadmill-based video analysis, they do believe that this study shows that running limb varus is not as important a concept as previously discussed by many authors. The FootTrak system is the first system available to give biomechanical researchers the ability to document the tibia-to-vertical angle with computerized digitation. The clinician with a knowledge of biomechanics understands that functional orthotic devices are more effective on primary calcaneal motions and positions than motions and positions produced by extrinsic tibial, knee, or hip factors. Thus, functional foot orthoses tend to work better in controlling varus during running that is produced by the calcaneus, rather than the tibia.
Center for Sports Medicine, Saint Francis Memorial Hospital, San Francisco, CA 94109.
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D001696:Biomechanical Phenomena; D003936:Diagnosis, Computer-Assisted; D005684:Gait / Q000502:physiology*; D006365:Heel / Q000502:physiology*; D006801:Humans; D012420:Running; D013977:Tibia / Q000502:physiology*; D014743:Videotape Recording; D016138:Walking