Objectives To investigate clinical effects and manual operational point of Bryan cervical disc prosthesis in Asian, to observe the stability and range of movement (ROM) postoperatively.

• 目的探索Bryan颈椎间盘假体应用于亚洲人的手术操作要点和早期治疗效果,观察假体植入后的稳定性和植入节段的活动度。