The Arc Test is an orthopedic test in order to assess for Achilles tendinopathy and to distinguish it from Achilles Tenosynovitis.

Jun 5, 2023 · The S1 nerve root serves as the conduit for both the afferent and efferent impulses of the Achilles tendon reflex arc. The deep tendon reflex arc is divided into the upper motor neuron (UMN) component and the lower motor neuron (LMN) component.

In this lab, students will determine the response time, conduction velocity (speed), and amplitude (strength) of two stretch reflexes: the Achilles reflex at the ankle and the patellar (knee-jerk) reflex.

The SVM classifier is shown to be capable of detecting tapping location on the Achilles tendon with 91.5% accuracy from streamed acceleration measurements enabling instant feedback to novices attempting to elicit reflex responses.

Exercise 1: Achilles Tendon Reflex. Aim: To determine conduction time from tendon tap to response of the gastrocnemius muscle in the Achilles tendon reflex arc. Procedure. 1. Instruct the subject to sit on a lab bench so that the subject’s thighs are supported by the top of the bench and his or her calves hang freely.

The Achilles reflex is a monosynaptic stretch reflex similar to the patellar reflex. In the Achilles reflex, the hammer taps the Achilles tendon while the foot is dorsiflexed, and the foot, in response, should jerk toward the plantar surface. The Achilles reflex originates in the S1 and S2 nerve roots.

Jerking of the ankle when the Achilles tendon is hit with a tendon hammer while the foot is relaxed, stimulating the S1 reflex arc. Access easy-to-understand explanations and practical examples on key biology topics, from cells to ecosystems. Learn …

The ankle jerk reflex, also known as the Achilles reflex, occurs when the Achilles tendon is tapped while the foot is dorsiflexed. ... A positive result would be the jerking of the foot towards its plantar surface.

Nov 7, 2024 · How to perform the Achilles Reflex? The ankle jerk is by far the most difficult reflex to master. There are two critical variables: proper stretch and efficient striking. Of the two, proper stretch is the more difficult to learn. Too little dorsiflexion leaves the tendon slack and able to absorb the blow without stretching the muscle.

Allow the reflex hammer to swing loosely between your thumb and forefinger through a 45 to 60 degree arc, while making certain the hammer moves in a horizontal plane (i.e., broad end of the reflex hammer is perpendicular to the tendon).