alexa Characteristics of L3 nerve root radiculopathy.
Neurology

Neurology

Journal of Spine

Author(s): Hirabayashi H, Takahashi J, Hashidate H, Ogihara N, Tashiro A,

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Abstract BACKGROUND: In degenerative lumbar spinal disease with nerve root compression, the L5 and S1 nerve roots are the most often affected and the L3 nerve root is involved infrequently. The purpose of this study was to investigate the characteristics of L3 nerve root radiculopathy. METHODS: Seventeen consecutive patients with L3 radiculopathy were treated. The symptomatic nerve roots were determined by the pain distribution, the neurologic findings, and selective nerve root injection. The clinical characteristics and outcomes of these patients were assessed retrospectively. RESULTS: The average age was 76 years. The spinal diseases that were associated with L3 radiculopathy were lumbar canal stenosis in 6 patients, lumbar extraforaminal stenosis and lumbar disk herniation in 5 each, and lumbar canal stenosis with degenerative scoliosis in 1. The patients' symptoms were thigh pain in 12 patients, and hip or knee pain in 5. Four patients were nonambulatory because of severe pain. Although a sensory disturbance was reported in 9 patients, motor weakness was present in 2. Selective nerve root injection was completely effective in 10 patients. Six had decompressive surgery and/or fusion followed by a favorable outcome. Four patients were misdiagnosed and received conservative treatment for hip and/or knee joint diseases. CONCLUSIONS: L3 radiculopathy was characterized by various lower limb pain and neurologic deficit. Selective nerve root injection was effective for most patients. In elderly patients who do not respond to treatment for hip and/or knee joint diseases, L3 nerve root radiculopathy should be considered as the cause of lower limb pain. This article was published in Surg Neurol and referenced in Journal of Spine

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