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Sciatic Neuropathy:Clinical and Prognostic Features in 73 Patients
Neurol 44:1669-1674, Yuen,E.C.,et al, 1994
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Article Abstract
We examined the clinical features of patients with sciatic neuropathy and the factors that influence prognosis.Of 92 consecutive patients referred for EMG evaluation of sciatic neuropathy,73 fulfilled strict inclusion and exclusion criteria and had adequate clinical and electrophysiologic information.The etiologies included hip arthroplasty(21.9),acute external compression(13.7%),infarction(9.6%),gunshot wound(9.6%),hip fracture/ dislocation(9.6%0,femur fracture(4.1%),contusion(4.1%),and uncertain(16. 4%).We used life table analysis to determine outcome and to identify prognostic factors in patients with acute or subacute onset.Moderate or better recovery(improvement to grade 2 by two of six clinical grades) occurred in most patients(30%by one year,50%by two years,75%by three years).A subgroup experienced excellent improvement(by three of six grades,or to grade 2)less frequently(33%by 2 and 3 years).Of the nine factors tested,two predicted an earlier or better recovery;a recordable compound muscle action potential of the extensor digitorum brevis(p<0.025) and an initial absence of paralysis of muscles controlling ankle plantar flexion and dorsiflexion(p<0.05).Thus,good but incomplete recovery occurs over 2 to 3 years in most patients with sciatic neuropathy,particularly in those without severe motor axonal loss.
 
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compression neuropathy
electromyogram
fracture,long bone
gunshot wounds
hip arthroplasty
hip fracture
mononeuropathy
nerve injury
neuropathy
neuropathy,ischemic
prognosis
review article
sciatic neuropathy

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