Magnetic resonanse imaging findings of redundant nerve roots syndrome

Objectives: The purpose of our study was to determinethe findings of redundant nerve roots syndrome (RNRS)in lumbar stenosis by magnetic resonance (MR) imaging.Materials and methods: A total of 8906 lumber MR imagingwere evaluated, retrospectively. RNRS were definedas a tortuosity of elongated nerve roots in the subarachnoidspace accompanied by spinal stenosis whichdetermined by images of MR. A total of 8 patients weredefined as RNRS.Results: Six of RNRS patients are female. The averageage of the 8 patients who were defined as RNRS byMRI was 70.0±15.0 (range, 39-87) years. The anteriorposteriorand transverse diameter of the spinal canal wasmeasured. The mean of the anterior-posterior diameter(mm) and transverse diameter (mm) of the spinal canalwere 11.50±2.0 mm (range; 8.0-14.0 mm) 8.4 mm and8.37±0.51 mm (range; 8.0-9.0 mm), respectively.Conclusion: In patients with spinal stenosis and RNRSshould also be considered.