Ankle jerk reflex

The ankle jerk reflex, also known as the Achilles Reflex, occurs when the Achilles tendon is tapped while the foot is dorsi-flexed. A positive result would be the jerking of the foot towards its plantar surface. Being a deep tendon reflex, it is monosynaptic. It is also a stretch reflex. These are monosynaptic spinal segmental reflexes. When they are intact, integrity of the following is confirmed: cutaneous innervation, motor supply, and cortical input to the corresponding spinal segment.

Root Value

This reflex is mediated by the S1 spinal segment of the spinal cord

Procedure and Components

Ankle of the patient is relaxed. It is helpful to support the ball of the foot at least somewhat to put some tension in the Achilles tendon, but don’t completely dorsiflex the ankle. A small strike is given on the Achilles tendon using a rubber hammer to elicit the response. If you are not able to elicit a response, a Jendrassik maneuver can be tried by having the patient cup their fingers on each hand and try to pull the hands apart. A positive response is marked by a brisk plantarflexion of the foot. The response is also graded into Grade 1-4 according to the reflex grading system

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Achilles

In Greek mythology, Achilles (/əˈkɪliːz/; Ancient Greek: Ἀχιλλεύς, Akhilleus, pronounced [akʰilːéu̯s]) was a Greek hero of the Trojan War and the central character and greatest warrior of Homer's Iliad. His mother was the nymph Thetis, and his father, Peleus, was the king of the Myrmidons.

Achilles’ most notable feat during the Trojan War was the slaying of the Trojan hero Hector outside the gates of Troy. Although the death of Achilles is not presented in the Iliad, other sources concur that he was killed near the end of the Trojan War by Paris, who shot him in the heel with an arrow. Later legends (beginning with a poem by Statius in the 1st century AD) state that Achilles was invulnerable in all of his body except for his heel. Because of his death from a small wound in the heel, the term Achilles' heel has come to mean a person's point of weakness.

Etymology

Achilles' name can be analyzed as a combination of ἄχος (akhos) "grief" and λαός (laos) "a people, tribe, nation." In other words, Achilles is an embodiment of the grief of the people, grief being a theme raised numerous times in the Iliad (frequently by Achilles). Achilles' role as the hero of grief forms an ironic juxtaposition with the conventional view of Achilles as the hero of κλέος kleos ("glory", usually glory in war).

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Achilles (1953–57 motorcycle)

The Achilles company built scooters and mopeds in West Germany between 1953 and 1957. The moped was powered by a 48cc engine, while the scooters were powered by 98cc and 123cc Sachs engines. When the factory closed down, the British Norman Cycles firm purchased the production equipment to manufacture their own moped.