Unilateral Reference Values for Hoffmann’s Reflex in Patients with Suspected Lumbosacral RadiculopathiesReportar como inadecuado




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Unilateral reference values for Hoffmann’s amplitude could be applied to the diagnosis of lumbosacral radiculopathy, especially in patients with bilateral lesions. Here, we assessed Hoffmann’s reflex by measuring H-wave amplitude and the ratio of H-wave amplitude to M-wave amplitude the H-M ratio. We performed a cross-sectional survey of patients from a Taiwan rehabilitation center n = 64, age 20 - 87 who presented with lower back pain that radiated to the leg and received a referral for electrodiagnostic examinations. Reference values for H-wave profile parameters were determined using data from lumbosacral radiculopathy-negative patients n = 10, age 22 - 53, who had normal big toe test results, ankle reflex test results, motor and sensory nerve conductive studies and F-wave latency and who displayed no evidence of radiculopathy in electromyography and imaging studies. The 50th percentile values for H-M ratio and H-wave amplitude were 28% and 6.25 mV, respectively. An H-wave profile



Autor: I-Hsuan Tsai, Hao-Hsuan Tsai

Fuente: http://www.scirp.org/



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