The Achilles reflex, or anklereflex, is a deep tendonreflex that is produced when the Achilles tendon is firmly tapped at the back of the ankle. The foot should flex downward. The reflex is often absent in diabetics and in people with peripheral neurological damage. A deep tendonreflex is a sudden contraction of a muscle in response to a sharp tap of a rubber hammer on a tendon of insertion of the muscle. Absence of this reflex may indicate neurological damage or damage to the muscle being tested. Research Achilles Reflex
 
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