Abstract: Objective To investigate the application of dynamic arthrodesis combined with shock waves in patients with cervical spondylosis and their effects on the improvement of blood rheology, cervical physiological curvature and function. 
Methods A total of 100 patients with cervical spondylosis were selected and randomly divided into two groups, with 50 patients in each group. The control group was treated with dynamic arthrodesis and the observation group was treated with dynamic arthrodesis combined with shock wave. The clinical efficacy, the 20-point scale of cervical spondylosis symptoms and the clinical assessment scale for cervical spondylosis (CASCS), the pain rating index (PRI) score, the cervical physiological curvature, and neck disability index (NDI) score, blood rheology (whole blood high-cut viscosity, whole blood low-cut viscosity, erythrocyte volume), Japanese Orthopaedic Association (JOA) scores and Activity of Daily Living (ADL) scale before and after treatment were observed in the two groups. 
Results The total clinical efficacy of the observation group was 92.00%, significantly higher than that (78.00%) of the control group (P＜0.05); The 20-point scale score of cervical spine symptoms and CASCS score were higher in the observation group than in the control group at the end of the treatment course and at 3 months of follow-up (P＜0.05). The PRI index (sensory score, emotional score and total score) was lower in the observation group than in the control group at the end of the treatment course and at 3 months of follow-up (P＜0.05). The cervical physiological curvature was significantly better in the observation group than in the control group at the end of the treatment course and at 3 months of follow-up, and the NDI score was lower than that of the control group (P＜0.05). The whole blood high-cut and low-cut viscosity and erythrocyte volume were lower in the observation group than in the control group at the end of the treatment course and at 3 months of follow-up (P＜0.05); The JOA and ADL scores were higher in the observation group than in the control group at the end of the treatment course and at 3 months of follow-up (P＜0.05). 
Conclusion Dynamic arthrodesis combined with shock wave therapy for cervical spondylosis is effective in regulating patients′ blood rheology, reducing cervical spondylosis symptoms, improving cervical and lumbar spine functions, and enhancing ADL. 

Key words: cervical spondylosis, dynamic arthrodesis, shock wave