Hoover's sign (leg paresis): Difference between revisions
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'''Hoover’s sign''' of leg paresis is one of two signs named for [[Charles Franklin Hoover]].<ref name="urlGeorge Crile, Charles Hoover and John Phillips">{{cite web |url=http://www.cwru.edu/artsci/dittrick/cemetery/stop13.htm |title=George Crile, Charles Hoover and John Phillips |work= |accessdate=}}</ref> |
'''Hoover’s sign''' of leg paresis is one of two signs named for [[Charles Franklin Hoover]].<ref name="urlGeorge Crile, Charles Hoover and John Phillips">{{cite web |url=http://www.cwru.edu/artsci/dittrick/cemetery/stop13.htm |title=George Crile, Charles Hoover and John Phillips |work= |accessdate=}}</ref> |
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One is a maneuver aimed to separate organic from non-organic [[paresis]] of the leg.<ref name="pmid15534257">{{cite journal |author=Koehler PJ, Okun MS |title=Important observations prior to the description of the Hoover sign |journal=Neurology |volume=63 |issue=9 |pages=1693–7 |date=November 2004 |pmid=15534257 |doi= |url=http://www.neurology.org/cgi/pmidlookup?view=long&pmid=15534257}}</ref> The sign relies on the principle of [[synergistic contraction]]. Involuntary extension of the "paralyzed" leg occurs when flexing the contralateral leg against resistance. It has been neglected, although it is a useful clinical test. Essentially, you hold your hand under the "weak" limb and ask the patient to flex the contralateral hip against resistance. If you feel pressure from the weak leg, the weakness is likely non organic. This is a positive Hoover's sign. If no pressure is felt, this is more likely organic limb weakness. |
One is a maneuver aimed to separate [[Organic disease|organic]] from non-organic [[paresis]] of the leg.<ref name="pmid15534257">{{cite journal |author=Koehler PJ, Okun MS |title=Important observations prior to the description of the Hoover sign |journal=Neurology |volume=63 |issue=9 |pages=1693–7 |date=November 2004 |pmid=15534257 |doi= |url=http://www.neurology.org/cgi/pmidlookup?view=long&pmid=15534257}}</ref> The sign relies on the principle of [[synergistic contraction]]. Involuntary extension of the "paralyzed" leg occurs when flexing the contralateral leg against resistance. It has been neglected, although it is a useful clinical test. Essentially, you hold your hand under the "weak" limb and ask the patient to flex the contralateral hip against resistance. If you feel pressure from the weak leg, the weakness is likely non organic. This is a positive Hoover's sign. If no pressure is felt, this is more likely organic limb weakness. |
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Strong hip muscles can make the test difficult to interpret.<ref name="pmid14707320">{{cite journal |author=Sonoo M |title=Abductor sign: a reliable new sign to detect unilateral non-organic paresis of the lower limb |journal=J. Neurol. Neurosurg. Psychiatr. |volume=75 |issue=1 |pages=121–5 |date=January 2004 |pmid=14707320 |pmc=1757483 |doi= |url=http://jnnp.bmj.com/cgi/pmidlookup?view=long&pmid=14707320}}</ref> |
Strong hip muscles can make the test difficult to interpret.<ref name="pmid14707320">{{cite journal |author=Sonoo M |title=Abductor sign: a reliable new sign to detect unilateral non-organic paresis of the lower limb |journal=J. Neurol. Neurosurg. Psychiatr. |volume=75 |issue=1 |pages=121–5 |date=January 2004 |pmid=14707320 |pmc=1757483 |doi= |url=http://jnnp.bmj.com/cgi/pmidlookup?view=long&pmid=14707320}}</ref> |
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Revision as of 03:33, 7 February 2014
Hoover’s sign of leg paresis is one of two signs named for Charles Franklin Hoover.[1]
One is a maneuver aimed to separate organic from non-organic paresis of the leg.[2] The sign relies on the principle of synergistic contraction. Involuntary extension of the "paralyzed" leg occurs when flexing the contralateral leg against resistance. It has been neglected, although it is a useful clinical test. Essentially, you hold your hand under the "weak" limb and ask the patient to flex the contralateral hip against resistance. If you feel pressure from the weak leg, the weakness is likely non organic. This is a positive Hoover's sign. If no pressure is felt, this is more likely organic limb weakness.
Strong hip muscles can make the test difficult to interpret.[3]
Efforts have been made to use the theory behind the sign to report a quantitative result.[4]
References
- ^ "George Crile, Charles Hoover and John Phillips".
- ^ Koehler PJ, Okun MS (November 2004). "Important observations prior to the description of the Hoover sign". Neurology. 63 (9): 1693–7. PMID 15534257.
- ^ Sonoo M (January 2004). "Abductor sign: a reliable new sign to detect unilateral non-organic paresis of the lower limb". J. Neurol. Neurosurg. Psychiatr. 75 (1): 121–5. PMC 1757483. PMID 14707320.
- ^ Ziv I, Djaldetti R, Zoldan Y, Avraham M, Melamed E (December 1998). "Diagnosis of "non-organic" limb paresis by a novel objective motor assessment: the quantitative Hoover's test". J. Neurol. 245 (12): 797–802. doi:10.1007/s004150050289. PMID 9840352.
{{cite journal}}: CS1 maint: multiple names: authors list (link)