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Asian spine journal · Apr 2015
Reliability of the Path of the Sciatic Nerve, Congruence between Patients' History and Medical Imaging Evidence of Disc Herniation and Its Role in Surgical Decision Making.
- Keyvan Mostofi and Karimi KhouzaniRezaRDepartment of Neurosurgery, International Neuroscience Institute, Hannover, Germany..
- Department of Neurosurgery, Centre de Chirurgie Endoscopique de Rachis, Clinique Bel Air, Bordeaux, France.
- Asian Spine J. 2015 Apr 1; 9 (2): 200-4.
Study DesignThe prevalence of disc herniation is estimated to be about 100,000 new cases per year in France and disc herniation accounts for 25% to 30% of surgical activity in Departments of Neurosurgery. Classically, sciatica is expected to follow its specific dermatome-L5 or S1-. In clinical practice, we regularly encounter patients showing discrepancy between clinical sciatica and imaging findings.PurposeThe aim of this paper is to review the medical concept and management of sciatica pain in patients showing this discrepancy.Overview Of LiteratureTo the best of our knowledge, this subject has not yet been discussed in the medical literature.MethodsThe medical records of 241 patients who were operated on for L5 or S1 sciatica caused by disc herniation were reviewed.ResultsWe found an apparent clinicoradiological discrepancy between sciatica described by patients on one side and magnetic resonance imaging (MRI) finding on the other side in 27 (11.20%) patients. We did not find any other abnormalities in the preoperative and postoperative period. All of these patients underwent lumbar discectomy via posterior interlaminar approach. Three months after surgery, 25 patients (92.59%) had been totally relieved of sciatica pain. Two patients (7.41%) continued to experience sciatica in spite of the surgery.ConclusionsThe discrepancy between clinical sciatica and disc herniation level on MRI is not rare. Management of this discrepancy requires further investigation in order to avoid missing the diagnosis and treatment failure.
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