Ankle jerk reflex
380299
221552465
2008-06-25T00:47:01Z
71.176.116.251
The '''ankle jerk reflex''', also known as the '''Achilles reflex''', occurs when the [[Achilles tendon]] is tapped while the foot is [[dorsiflexion|dorsi-flexed]]. A positive result would be the jerking of the foot towards its plantar surface.
The Achilles [[Reflex action|reflex]] checks if the S1 and S2 [[nerve]] roots are intact and could be indicative of [[sciatic nerve]] [[pathology]]. It is classically delayed in [[hypothyroidism]]. This reflex is usually absent in [[herniated disk|disk herniations]] at the L5-S1 level.
== See also ==
*[[Tonic vibration reflex]]
{{med-sign-stub}}
{{Reflex}}
[[Category:Reflexes]]
[[de:Achillessehnenreflex]]
[[nl:Achillespeesreflex]]