Data of CT images and the femoral neck BMD were obtained from 99 patients who underwent the cervical CT and BMD simultaneously (the gap of both studies was within 6 months) from April 2009 to December 2014. There were 52 females and 47 males. The mean age was 63.7 year (female: 63.4 years, male: 64.1; range 32-86 years). The patient was excluded who had any destructive pathology or severe spondylosis in the cervical pedicle and the cervical lateral mass. Patients were divided into three groups according to femoral neck BMD (Group A, T-score ≥-1; Group B, -2.5\

Inclusion Criteria:

• Patients who underwent the cervical CT and BMD simultaneously (the gap of both studies was within 6 months)

Exclusion Criteria:

• Who had any destructive pathology or severe spondylosis in the cervical pedicle and the cervical lateral mass.

Data of CT images and the femoral neck BMD were obtained from 99 patients who underwent the cervical CT and BMD simultaneously (the gap of both studies was within 6 months)