Intradural disc herniation is a rare entity, representing between 0.26% and 0.30% of all herniated discs. 92% of cases occur in the lumbar spine, more frequent at the L4-L5 level. The diagnostic and therapeutic conduct performed in a 61-year-old male patient who came to the office with a one-year and six-month history of dorsolumbar pain is described, accompanied by sensory alterations in the lower limbs. In view of the exacerbation of symptoms, a simple magnetic resonance study was performed, observing an intraspinal, intradural, extramedullary lesion at the D12-L1 space. An intradural disc herniation is suspected. After being evaluated the case in the group of Neurosurgeons (Group of Spinal Surgery) of the Institute of Neurology and Neurosurgery of Havana, it is proposed to carry out surgical treatment, which consisted of the extraction with microsurgical technique of the Herniated disc, preserving the vertebral anatomy through the laminoplasty technique, an open book variant. The patient evolved satisfactorily after three months of follow-up. It is concluded that intradural disc herniation should be included among intradural, extraxial lesions of the spine. By means of the magnetic resonance study, a group of imaging signs that support the preoperative diagnosis of this lesion can be described. Surgery is the definitive therapeutic method and allows an accurate diagnosis of spinal herniation to be established.
The aim of recalibration of the lumbar canal using the Senegas technique guarantees stability and preserves movement, with a considerable reduction in surgical risk and faster incorporation into daily life. Objective: To evaluate the surgical results of recalibration of the lumbar canal using the modified Senegas technique. Materials and Methods: An ambispective and cross-sectional descriptive observational study was carried out at the Institute of Neurology and Neurosurgery between January 2011 and December 2019 that were evaluated 6 and 12 months after having been operated. Results: 70.7% of the patients manifested chronic low back pain, and dysesthesia was found in 39.8%. There were 15.8% complications. The clinical evolution according to the Lumbar and Lower Limb Verbal Numerical Scale and the functional one according to the Oswestry Disability Index was better at 6 and 12 months after the intervention compared to the preoperative period. The result was considered good at 82.7% and 89.4%, respectively, at 6 and 12 months. Conclusions: The clinical and functional evolution of the operated patients is significantly better at 6 and 12 months concerning the preoperative one. At both 6 and 12 months, surgical results are good in the vast majority of patients.
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