Clinical significance of the redundant nerve roots of the cauda equina documented on magnetic resonance imaging
| Autor: | Atsushi Ono, Takuya Numasawa, Futoshi Suetsuna, Toru Yokoyama, Tomoyuki Irie, Kanichiro Wada, Satoshi Toh |
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| Rok vydání: | 2007 |
| Předmět: |
Male
medicine.medical_specialty Nerve root Cauda Equina medicine.medical_treatment Pain Walking Severity of Illness Index Congenital Abnormalities medicine Humans Clinical significance Postoperative Period Myelography Aged Leg Lumbar Vertebrae medicine.diagnostic_test business.industry Cauda equina Magnetic resonance imaging General Medicine Middle Aged medicine.disease Magnetic Resonance Imaging Spondylolisthesis Stenosis medicine.anatomical_structure Spinal Fusion Spinal fusion Sensation Disorders Female Radiology business Spinal Nerve Roots |
| Zdroj: | Journal of neurosurgery. Spine. 7(1) |
| ISSN: | 1547-5654 |
| Popis: | Object Previous reports of redundant nerve roots (RNRs) of the cauda equina have been limited to evaluations based on myelography. Neither the imaging nor the clinical features of RNRs in relation to magnetic resonance (MR) imaging have been elaborated. The MR imaging characteristics of RNRs were evaluated using the Japanese Orthopaedic Association score before and after the surgery. Methods There were 44 patients with L4–5 spondylolisthesis in which a complete blockage was demonstrated on myelography. All patients underwent posterior L4–5 interbody fusion. Based the myelographic and MR imaging findings, the patients were stratified into the following three groups: RNRs recognized on both myelographic and MR imaging (Group A); RNRs recognized on myelography but not very evident on MR imaging (Group B); and RNRs not recognized on either myelographic or MR imaging (Group C). Among these three groups, pre- and postoperative clinical symptoms were compared. Results There were 16 patients in Group A, 14 in Group B, and 14 in Group C. In terms of preoperative clinical symptoms, there was a significant difference between Groups A and C in the incidence of leg pain and tingling sensation. Significant differences were also noted between Groups A and C and between Groups B and C in ambulatory ability. Evaluation of postoperative clinical symptoms showed a significant difference between Groups A and C in ambulatory ability. Conclusions Patients with MR imaging evidence of RNRs presented with more severe clinical symptoms. It is believed that the RNR features derived from MR images represent important findings. |
| Databáze: | OpenAIRE |
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