title: Preoperative CT examination for accurate and safe anterior spinal instrumentation surgery with endoscopic approach.
abstract: The purpose of this article is to introduce a new procedure for the surgical planning of thoracic anterior spinal instrumentation via endoscopy. For accurate and safe anterior screw insertion via the endoscopic approach, we devised a surgical plan based on the preoperative chest computed tomography (CT) findings obtained with radiographic markers. Using this method, we performed endoscopic thoracic spinal instrumentation surgery in 14 patients. Nine patients underwent anterior endoscopic correction and fusion of idiopathic scoliosis by Cotrel-Dubousset instrumentation, and five patients underwent anterior endoscopic spinal fixation with instrumentation. The accuracy of screw insertion was evaluated postoperatively by CT scanning. One interbody fusion cage and 53 screws were inserted in the 14 patients using endoscopy. Postoperative CT scans revealed that the screws were all accurately inserted without any neurologic complications. In conclusion, using this novel procedure for surgical planning based on CT findings obtained with radiographic markers, anterior screws can be inserted safely and accurately via an endoscopic approach.
authors.affiliation: Department of Orthopaedic Surgery, Suwa Red Cross Hospital, Suwa-city, Nagano, Japan. mikamimura@hotmail.com
authors.forename: Mikio
authors.initials: M
authors.lastname: Kamimura
authors.forename: Testuya
authors.initials: T
authors.lastname: Kinoshita
authors.forename: Hidehiro
authors.initials: H
authors.lastname: Itoh
authors.forename: Yohei
authors.initials: Y
authors.lastname: Yuzawa
authors.forename: Jun
authors.initials: J
authors.lastname: Takahashi
authors.forename: Hiroki
authors.initials: H
authors.lastname: Hirabayashi
authors.forename: Isao
authors.initials: I
authors.lastname: Nakamura
mesh_terms: D000293:Adolescent; D001863:Bone Screws; D004724:Endoscopy / Q000379:methods*; D005260:Female; D006801:Humans; D007403:Intervertebral Disc / Q000000981:diagnostic imaging / Q000601:surgery; D012600:Scoliosis / Q000000981:diagnostic imaging / Q000601:surgery; D013123:Spinal Fusion / Q000295:instrumentation / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*