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- W1563344452 abstract "Object The aim of this retrospective study was to evaluate the clinical usefulness of assessing lumbar somatosensory evoked potentials (SSEPs) in central lumbar spinal stenosis (LSS). Methods The latencies of lumbar SSEPs were recorded in 40 patients with central LSS, including 16 men and 24 women. The mean age of the patients was 67.3 ± 7.4 years. The diagnosis was LSS in 23 cases and LSS associated with degenerative spondylolisthesis in 17 cases. The average duration of symptoms was 43.8 ± 51.2 months. Twenty-two cases had bilateral and 18 cases had unilateral leg symptoms. Thirty-seven cases were associated with neurogenic intermittent claudication and the mean walking distance of patients with this condition was 246.8 ± 232.7 m. The mean Japanese Orthopedic Association scale score, as well as the visual analog scale (VAS) scores of low-back pain, leg pain, and numbness, were 16.5 ± 3.5, 6.0 ± 2.5, 6.9 ± 2.1, and 7.8 ± 2.2, respectively. The minimal cross-sectional area of the dural sac on MR imaging was 0.44 ± 0.21 cm 2 . Thirty-nine cases of cervical spondylotic myelopathy without lumbar and peripheral neuropathy were chosen as the control group. Results The latencies of lumbar SSEPs in patients with LSS and in the control group were 23.0 ± 2.0 ms and 21.6 ± 1.9 ms, respectively. There was a statistically significant difference between the LSS and control groups (p < 0.05). The latency of lumbar SSEPs was significant correlated with the VAS score of leg numbness (p < 0.05). The latency of lumbar SSEPs in LSS was clearly delayed when the VAS score of leg numbness was ≥ 8 (p < 0.05). Conclusions Lumbar SSEPs are able to detect neurological deficit in the lumbar area effectively, and they can reflect part of the subjective severity of sensory disturbance (numbness) in LSS. Both lumbar SSEPs and VAS scores of leg numbness may be useful for clinical evaluation in patients with LSS." @default.
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- W1563344452 date "2009-07-01" @default.
- W1563344452 modified "2023-10-16" @default.
- W1563344452 title "Clinical usefulness of assessing lumbar somatosensory evoked potentials in lumbar spinal stenosis" @default.
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- W1563344452 doi "https://doi.org/10.3171/2009.3.spine08513" @default.
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