title: Intraoperative computed tomography for cervicomedullary decompression of foramen magnum stenosis in achondroplasia: two case reports.
abstract: The authors report two cases of cervicomedullary decompression of foramen magnum (FM) stenosis in children with achondroplasia using intraoperative computed tomography (iCT). A 14-month-old girl with myelopathy and retarded motor development, and a 10-year-old girl who had already undergone incomplete FM decompression was presented with myelopathy. Both patients underwent decompressive sub-occipitalcraniectomy and C1 laminectomy without duraplasty using iCT. It clearly showed the extent of FM decompression during surgery, which finally enabled sufficient decompression. After the operation, their myelopathy improved. We think that iCT can provide useful information and guidance for sufficient decompression for FM stenosis in children with achondroplasia.
authors.forename: Hidetaka
authors.initials: H
authors.lastname: Arishima
authors.forename: Kenzo
authors.initials: K
authors.lastname: Tsunetoshi
authors.forename: Toshiaki
authors.initials: T
authors.lastname: Kodera
authors.forename: Ryuhei
authors.initials: R
authors.lastname: Kitai
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Takeuchi
authors.forename: Ken-Ichiro
authors.initials: K
authors.lastname: Kikuta
mesh_terms: D000130:Achondroplasia / Q000150:complications / Q000000981:diagnostic imaging / Q000601:surgery*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging / Q000601:surgery; D019299:Decompression, Surgical; D056424:Decompressive Craniectomy / Q000379:methods*; D005260:Female; D005539:Foramen Magnum / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery*; D006801:Humans; D006849:Hydrocephalus / Q000209:etiology; D007796:Laminectomy / Q000379:methods*; D010027:Osteotomy; D015641:Radiography, Interventional; D013117:Spinal Cord Compression / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D025321:Surgery, Computer-Assisted; D014057:Tomography, X-Ray Computed