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The ankle jerk reflex, also known as the Achilles reflex, occurs when the Achilles tendon is tapped while the foot is dorsiflexed.It is a type of stretch reflex that tests the function of the gastrocnemius muscle and the nerve that supplies it.
Ankle jerk reflex — jerking of the ankle when the Achilles tendon is hit with a tendon hammer while the foot is relaxed, stimulating the S1 reflex arc. Arthrokinetic reflex — muscular activation or inhibition in response to joint mobilization
The patellar reflex (knee jerk) is an example of the stretch reflex and it is used to determine the sensitivity of the stretch reflex. Reflexes can be tested as part of a neurological examination, often if there is an injury to the central nervous system. To test the reflex, the muscle should be in a neutral position.
Woltman's sign (also called Woltman's sign of hypothyroidism or, in older references, myxedema reflex [1]) is a delayed relaxation phase of an elicited deep tendon reflex, usually tested in the Achilles tendon of the patient. Woltman's sign is named for Henry Woltman, an American neurologist. [2]
Tendon reflex (or T-reflex) may refer to: The stretch reflex or muscle stretch reflex (MSR), when the stretch is created by a blow upon a muscle tendon. This is the commonly used definition of the term. [1] [2] Albeit a misnomer, in this sense a common example is the standard patellar reflex or knee-jerk response. [3]
A stretch reflex is the contraction of a muscle in response to its lengthwise stretch. Biceps reflex (C5, C6) Brachioradialis reflex (C5, C6, C7) Extensor digitorum reflex (C6, C7) Triceps reflex (C6, C7, C8) Patellar reflex or knee-jerk reflex (L2, L3, L4) Ankle jerk reflex (Achilles reflex) (S1, S2)
Abdominal reflex; Accommodation reflex; Acoustic reflex; Affective sensation; Reflex anal dilation; Anal wink; Ankle jerk reflex; Aplysia gill and siphon withdrawal reflex; Arthrokinetic reflex; Asymmetrical tonic neck reflex; Avoidance response; Axon reflex
Classically, ankle jerk reflex is absent in peripheral neuropathy. A physical examination will involve testing the deep ankle reflex as well as examining the feet for any ulceration . For large fiber neuropathy, an exam will usually show an abnormally decreased sensation to vibration, which is tested with a 128-Hz tuning fork , and diminished ...