Methods.Ten normal subjects, 10 patients treated with an ACDF (C5-C6), and 10 patients having CADR (C5-C6) performed full flexion to extension motions under fluoroscopic surveillance.

• 方法：10个正常受试者、10个颈椎前路减压和融合的病人和10个颈椎间盘置换植入的病人在荧光屏的监视下过度屈曲和伸直。