Bekhterev Mendel reflex

Bekhterev-Mendel Reflex
Other names	Mendel-Bekhterev Reflex
Specialty	Neurology

The Bekhterev-Mendel Reflex is a neurological reflex that is observed in certain pathological conditions affecting the central nervous system. It is named after the Russian neurologist Vladimir Bekhterev and the German neurologist Kurt Mendel. This reflex is considered a pathological reflex, meaning it is typically absent in healthy individuals and its presence may indicate neurological dysfunction.

Description

The Bekhterev-Mendel Reflex is elicited by tapping the dorsum (top) of the foot. In response to this stimulus, there is a reflex contraction of the muscles that extend the toes. This reflex is considered to be a variant of the Babinski sign, which is another pathological reflex involving the toes.

Clinical Significance

The presence of the Bekhterev-Mendel Reflex can be indicative of upper motor neuron lesions. Such lesions can occur in conditions like multiple sclerosis, amyotrophic lateral sclerosis, or after a stroke. The reflex is part of a group of signs that neurologists use to assess the integrity of the pyramidal tract, which is responsible for voluntary motor control.

History

The reflex was first described by Vladimir Bekhterev and Kurt Mendel in the late 19th and early 20th centuries. Both neurologists contributed significantly to the understanding of neurological reflexes and their implications in diagnosing neurological disorders.

Examination Technique

To test for the Bekhterev-Mendel Reflex, the patient should be in a relaxed position, either sitting or lying down. The examiner taps the dorsum of the foot with a reflex hammer or similar instrument. Observation of the toes is crucial to determine if there is an extension response, which would indicate a positive reflex.

Differential Diagnosis

The Bekhterev-Mendel Reflex should be considered alongside other pathological reflexes such as the Babinski sign, Chaddock reflex, and Oppenheim's reflex. The presence of multiple pathological reflexes can help localize the lesion and determine the extent of neurological involvement.

Also see

• Babinski sign
• Chaddock reflex
• Oppenheim's reflex
• Upper motor neuron lesion
• Pyramidal tract

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External links

• Comprehensive information from the National Institute of health.
  

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