Feng's spinal manipulation for cervical spondylosis: kinematic changes

• Cervical spondylosis patients show reduced primary range of motion and increased coupled motion ratios compared to healthy controls. • Feng's spinal manipulation significantly improves pain, disability, and several kinematic parameters including range of motion, symmetry, and velocity. • Coupled motion patterns did not change significantly after treatment, but specific coupled motion ratios improved. • The study highlights the importance of assessing coupled motions in cervical spondylosis for a comprehensive kinematic evaluation.