title: Delayed bilateral vertebral artery occlusion after cervical spine injury: a case report.
abstract: BACKGROUND
  There are considerable risks for the secondary spinal cord injury and the initial and/or delayed vertebral artery occlusion in cases of cervical fracture dislocation.
  
  
  METHODS
  An 86-year-old man was injured in a car accident and was diagnosed with no fracture or dislocation of the cervical spine by the emergency physician. However, he was transferred to our hospital 3 days later because he had motor weakness that was evaluated to be 32 points (out of 50 points) on the upper limb American Spinal Injury Association (ASIA) motor score and was diagnosed with spontaneously reduced fracture dislocation at C5/6. Magnetic resonance images revealed that the bilateral vertebral arteries were occluded, and there were some microinfarction lesions in the brain. On the first visit to his previous doctor, he was found to have a flow void in the right vertebral artery. This indicated that it was occluded during the waiting period at his previous doctor. On the day of his arrival at our hospital, the patient underwent a C5/6 posterior spinal fusion. Three months after surgery, he recovered to 46 points on the upper extremity ASIA motor score, and blood flow in the left vertebral artery was resumed.
  
  
  CONCLUSIONS
  Early reduction and stabilization are necessary for cervical spine fracture dislocation; however, it is important not only for the prevention of the secondary injury but also for the reduction of the risk of vertebral artery occlusion.
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Miki
authors.initials: M
authors.lastname: Komatsu
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Kota
authors.initials: K
authors.lastname: Suda
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine , Sapporo, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Takahata
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Satoko
authors.initials: S
authors.lastname: Matsumoto
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Chikara
authors.initials: C
authors.lastname: Ushiku
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Katsuhisa
authors.initials: K
authors.lastname: Yamada
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Junichi
authors.initials: J
authors.lastname: Yamane
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Tsutomu
authors.initials: T
authors.lastname: Endo
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine , Sapporo, Japan.
authors.forename: Norimasa
authors.initials: N
authors.lastname: Iwasaki
authors.affiliation: Department of Orthopaedic Surgery, Hokkaido Chuo Rosai Hospital Spinal Cord Injury Center , Bibai, Japan.
authors.forename: Akio
authors.initials: A
authors.lastname: Minami
keywords: Spinal cord diseases; Trauma