Fig. 2.

Comparison of cervical alignment on sagittal radiographs. (A) Pretreatment image depicts cervical kyphosis and subluxation of the C4 with relation to C5. Red arrows point to the two segments that are developing reversed curve. Arthritic cervical facet joints and uncovertebral joints are denoted by white and yellow arrows, respectively. Kyphotic angle of the C4/C5 is 23°. The posterior vertebral (yellow) line highlights a distorted curvature. (B) After nine months of treatment, the C5 vertebral rotation was restored, and global cervical curvature returned to 2° lordosis. The radiographic and postural improvement positively correlates with symptom relief.