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jerk |
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jerk [jərk] (mechanics) The rate of change of acceleration; it is the third derivative of position with respect to time. A unit of rate of change of acceleration, equal to 1 foot (30.48 centimeters) per second squared per second. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Neurological examination of the lower limbs revealed normal sensation, an absent left ankle jerk reflex, and decreased strength (force-generating capacity) of the left gastrocnemius muscle, with the patient unable to perform a left leg heel raise while standing. On neurologic examination, she had 4/5 muscle strength in the plantar flexor muscle on the left, and the ankle jerk was absent. A characteristic bedside indicator of profound hypothyroidism is prolonged ankle jerk relaxation phase (AJRP). |
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