Endoscopic foramen magnum decompression of Chiari malformation

Abstract

Objective To investigate the methods and effectiveness to treat Chiari malformation with the surgical decompression of the foramen magnum under endoscope. Method 23 cases with Chiari malformation.(without atlanto- axialdislocation and basilar invagination) diagnosed by magnetic resonance imaging( MRI)were operated with the surgical decompression of the foramen magnum under the endoscope. Results 23 cases were followed- up 0. 5 -3. 0, years after operation, all the symptoms and signs were remarkably relieved after the operation. No complications was found. In 16 cases with spinal cavities,7 cases spinal cavities disappeared and scases deflated,l case no evident change. Conclusions The endoscope -assisted decompression of the foramen magnum is a safe and effective surgical method to treat Chairi malformation. Key words: Endoscopes; Chiari malformation; Tonsillar herniation malformation; Syringomyelia; Foramen magnum decompression