Skip to main content

Table 1 Data summary for patients in the subaxial and thoracolumbar groups

From: Correlation between osteoarthritis of the atlantoaxial facet joint and a high‐riding vertebral artery

  Subaxial group (94 patients) Thoracolumbar group (121 patients) p
Sexa Male 67 Male 71 0.06
Female 27 Female 50
Agea 61.9 ± 11.1 67.1 ± 10.2 0.001*
BMIa 25.6 ± 5.8 24.8 ± 4.5 0.29
Diagnosis cervical OPLL 48, cervical spondylosis 38, cervical spondylotic radiculopathy 3, cervical spine kyphosis 3, cervical spondylotic amyotrophy 2 lumbar spinal canal stenosis 82, degenerative lumbar kyphoscoliosis 17, thoracic OYL 15, thoracic spondylotic myelopathy 7  
OA grade of the C1-2 facet jointsa Grade 0 17 Grade 0 24 0.037*
Grade 1 24 Grade 1 46
Grade 2 45 Grade 2 47
Grade 3 8 Grade 3 4
HRVAa 26 cases (27.7%) 20 cases (15.6%) 0.033*
  1. aSex and the prevalence of a high-riding vertebral artery (HRVA) were compared using a Pearson χ2 test. Age and BMI were compared using an unpaired Student t test. OA grade of the C1-2 facet joints was compared using a Mann–Whitney U test. *p < 0.05
  2. BMI Body mass index, OPLL Ossification of the posterior longitudinal ligament, OYL Ossification of the yellow ligament, OA Osteoarthritis