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INTRODUCTION Hand-arm vibration syndrome (HAVS) is an occupational neurodegenerative and vasospastic disorder in workers who use powered hand tools. Frequency weighting (ISO 5349) predicts little risk of injury for frequencies >500 HZ. Potentially damaging high frequencies abound in impact tool-generated shock waves. METHODS A rat tail impact vibration(More)
Successful recovery from a lateral ankle sprain often requires the use of several different ankle braces during different stages of rehabilitation. During the initial time period after the injury, a highly restrictive ankle-foot orthosis or walking boot may be implemented to severely limit lateral ankle movement. As the ankle heals, progressively "softer"(More)
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