Department of Orthopedic Surgery, Peking University Third Hospital, Beijing 100191, China.
Chin Med J (Engl). 2013 Oct;126(20):3809-11.
Cervical disc arthroplasty is an alternative surgery to standard cervical decompression and fusion for disc degeneration. Different types of cervical disc prosthesis are used in China. The aim of this study was to evaluate the radiographic outcomes of cervical arthroplasty using the ProDisc-C prosthesis.
Radiographic evaluation, including static and dynamic flexion-extension lateral images, was performed at baseline and at final follow-up.
Twenty six patients who had single-level ProDisc-C arthroplasty were followed up for a mean period of 63 months (56-76 months). The range of motion at the operated level was 9.3°±3.7° at baseline and 7.3°±3.5° at final follow-up, with a significant difference (P < 0.05). Seventeen of 26 levels (65.4%) developed heterotopic ossification: three were classified as grade II, 13 were classified as grade III, and 1 as grade IV, according to McAfee's classification. Forty nine adjacent segments were evaluated by lateral X-ray and 18 (36.7%) segments developed adjacent segment degenerations.
ProDisc-C arthroplasty had acceptable radiographic results at 5-year follow-up. The range of motion was preserved. However, more than 60% of the patients developed heterotopic ossification.
颈椎间盘置换术是一种替代标准颈椎减压融合术治疗椎间盘退变的手术方法。中国使用了不同类型的颈椎间盘假体。本研究旨在评估 ProDisc-C 假体颈椎置换术的影像学结果。
在基线和最终随访时进行影像学评估，包括静态和动态屈伸侧位片。
26 例单节段 ProDisc-C 关节置换患者平均随访 63 个月（56-76 个月）。手术节段的活动度在基线时为 9.3°±3.7°，在最终随访时为 7.3°±3.5°，差异有统计学意义（P < 0.05）。根据 McAfee 分类，26 个节段中有 17 个（65.4%）发生异位骨化：3 个为 II 级，13 个为 III 级，1 个为 IV 级。49 个相邻节段通过侧位 X 线评估，18 个（36.7%）节段发生相邻节段退变。
ProDisc-C 关节置换术后 5 年的影像学结果可接受。活动度得以保留。然而，超过 60%的患者发生了异位骨化。
