not significantly significantp =0.052
Comparing the change in the CK level at POD 1 between the cervical and lumbar cases, the mean difference in the CK change between the preoperative and POD 1 CK values was 450.08 U/L for the cervical group and 811.25 U/L for the lumbar group; however, this difference was not significantly significant ( p =0.052).