Hoffmann's sign

(Redirected from Hoffman's sign)
Jump to navigation Jump to search
Hoffmann's sign

WikiDoc Resources for Hoffmann's sign

Articles

Most recent articles on Hoffmann's sign

Most cited articles on Hoffmann's sign

Review articles on Hoffmann's sign

Articles on Hoffmann's sign in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Hoffmann's sign

Images of Hoffmann's sign

Photos of Hoffmann's sign

Podcasts & MP3s on Hoffmann's sign

Videos on Hoffmann's sign

Evidence Based Medicine

Cochrane Collaboration on Hoffmann's sign

Bandolier on Hoffmann's sign

TRIP on Hoffmann's sign

Clinical Trials

Ongoing Trials on Hoffmann's sign at Clinical Trials.gov

Trial results on Hoffmann's sign

Clinical Trials on Hoffmann's sign at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Hoffmann's sign

NICE Guidance on Hoffmann's sign

NHS PRODIGY Guidance

FDA on Hoffmann's sign

CDC on Hoffmann's sign

Books

Books on Hoffmann's sign

News

Hoffmann's sign in the news

Be alerted to news on Hoffmann's sign

News trends on Hoffmann's sign

Commentary

Blogs on Hoffmann's sign

Definitions

Definitions of Hoffmann's sign

Patient Resources / Community

Patient resources on Hoffmann's sign

Discussion groups on Hoffmann's sign

Patient Handouts on Hoffmann's sign

Directions to Hospitals Treating Hoffmann's sign

Risk calculators and risk factors for Hoffmann's sign

Healthcare Provider Resources

Symptoms of Hoffmann's sign

Causes & Risk Factors for Hoffmann's sign

Diagnostic studies for Hoffmann's sign

Treatment of Hoffmann's sign

Continuing Medical Education (CME)

CME Programs on Hoffmann's sign

International

Hoffmann's sign en Espanol

Hoffmann's sign en Francais

Business

Hoffmann's sign in the Marketplace

Patents on Hoffmann's sign

Experimental / Informatics

List of terms related to Hoffmann's sign

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Template:Editor help

The Hoffmann's sign, named after the German neurologist, Johann Hoffmann (born 1857, Rheinhesse; died 1919, Heidelberg), is a finding elicited by a reflex test which verifies the presence or absence of problems in the corticospinal tract. It is also known as the finger flexor reflex.

The test involves tapping the nail or flicking the terminal phalanx of the third or fourth finger. A positive response is seen with flexion of the terminal phalanx of the thumb.

Relation to Babinski sign

Hoffmann's sign is often considered the upper limb equivalent of the Babinski's sign[1] because it, like the Babinski sign, indicates upper motor neuron dysfunction.[2] Mechanistically, it differs considerably from the Babinski or plantar reflex; Hoffmann's sign involves a monosynaptic reflex pathway in Rexed lamina IX of the spinal cord, normally fully inhibited by descending input. The pathways involved in the plantar reflex are more complicated, and different sorts of lesions may interrupt them. This fact has led some neurologists to reject strongly any analogies between the finger flexor reflex and the plantar response.

References

  1. Harrop JS, Hanna A, Silva MT, Sharan A (2007). "Neurological manifestations of cervical spondylosis: an overview of signs, symptoms, and pathophysiology". Neurosurgery. 60 (1 Supp1 1): S14–20. doi:10.1227/01.NEU.0000215380.71097.EC. PMID 17204875.
  2. New York University School of Medicine. Deep Tendon Reflexes. URL: http://endeavor.med.nyu.edu/neurosurgery/reflexes.html. Accessed November 27, 2005.

See also

External links

Template:Eponymous medical signs for nervous system


Template:WikiDoc Sources