Achilles jerk meaning

The term Achilles jerk refers to a sudden involuntary contraction of the calf muscle in response to a sharp tap on the Achilles tendon, testing the integrity of the reflex arc.


Achilles jerk definitions

Word backwards sellihcA krej
Part of speech Achilles jerk is a noun phrase.
Syllabic division Ach-illes jerk
Plural The plural of Achilles jerk is Achilles jerks.
Total letters 12
Vogais (3) a,i,e
Consonants (8) a,c,h,l,s,j,r,k

Achilles Jerk: Understanding the Basics

When your doctor taps your Achilles tendon with a reflex hammer and your foot automatically moves in response, that is known as the Achilles jerk. This involuntary movement is actually a deep tendon reflex that involves the muscle stretch receptors and spinal cord.

How Does the Achilles Jerk Work?

When the Achilles tendon is tapped, it causes the calf muscles to stretch. This stretching activates sensory nerve fibers in the muscle, sending a signal to the spinal cord. The spinal cord then sends a message back to the calf muscles to contract, causing the foot to move.

Significance of Achilles Jerk

The Achilles jerk is a test of the S1 spinal nerve and cord function. It helps doctors assess the integrity of the spinal cord and the nerves involved in the reflex. Changes in the response of the Achilles jerk can indicate various neurological conditions.

Clinical Applications

Doctors use the Achilles jerk reflex test as part of a neurological examination to evaluate conditions such as spinal cord injuries, nerve compression, and neurological disorders. Abnormal responses can provide valuable information for diagnosis and treatment.

Overall, the Achilles jerk is a simple yet important reflex that can provide insights into the functioning of the nervous system.


Achilles jerk Examples

  1. During a physical exam, the doctor tested the patient's reflexes, including the Achilles jerk.
  2. The athlete felt a sudden pain in his Achilles tendon after an intense workout, known as Achilles jerk.
  3. The physiotherapist recommended stretches to prevent Achilles jerk in runners.
  4. The nurse documented the patient's Achilles jerk response in the medical chart.
  5. After the injury, the basketball player experienced Achilles jerk when trying to walk.
  6. The physical therapist used the Achilles jerk reflex test to assess nerve function.
  7. The coach warned the team about the importance of proper warm-up to avoid Achilles jerk.
  8. The doctor diagnosed the patient with Achilles jerk syndrome due to repetitive strain on the tendon.
  9. The athlete's Achilles jerk reflex was hypersensitive, indicating a possible nerve issue.
  10. The researcher studied the correlation between age and Achilles jerk response time.


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  • Updated 28/03/2024 - 23:52:56