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- Title
Clinical and radiological outcomes of cervical disc arthroplasty: ten year follow-up study.
- Authors
Song, Qingpeng; He, Da; Han, Xiao; Zhang, Ning; Wang, Jinchao; Tian, Wei
- Abstract
<bold>Purpose: </bold>Previous studies have demonstrated that cervical disc arthroplasty has favourable short- and medium-term clinical and radiological outcomes. However, long-term follow-up outcomes have rarely been reported. The purpose of this study was to evaluate the ten year follow-up clinical and radiological outcomes in patients who underwent Bryan cervical disc arthroplasty.<bold>Methods: </bold>Seventy-one patients who underwent single-level Bryan cervical disc arthroplasty with a minimum ten year follow-up were included in the study. Japanese Orthopaedic Association (JOA) score, neck disability index (NDI), and Odom's criteria were used to evaluate clinical outcomes. X-ray, CT, and MRI were used to evaluate the radiological outcomes.<bold>Results: </bold>At last follow-up, the JOA score and NDI improved significantly, and 65 patients (91.5%) had good or excellent outcomes according to Odom's criteria. The range of motion (ROM) at operated level was 9.7° pre-operatively and maintained to 8.6° at last follow-up. The sagittal alignment of operated level was decreased from 2.1° pre-operatively to 1.2° at last follow-up (P < 0.01). The ROM and sagittal alignment of cervical spine had no significant change. At last follow-up, 16 patients (22.5%) developed segmental kyphosis, and 33 patients (46.5%) developed adjacent segment degeneration. Paravertebral ossification (PO) was observed in 66 patients (93.0%), and high-grade PO (grades III and IV) was observed in 25 patients (35.2%).<bold>Conclusions: </bold>The clinical and radiological outcomes of Bryan cervical disc arthroplasty over ten years follow-up are satisfying. However, the occurrence of high-grade PO restricted the ROM of operated level.
- Subjects
CERVICAL vertebrae diseases; DISCECTOMY; MAGNETIC resonance imaging; ARTHROPLASTY; NECK diseases; CERVICAL vertebrae; FUNCTIONAL assessment; RANGE of motion of joints; LONGITUDINAL method; RESEARCH funding; SURGICAL complications; TREATMENT effectiveness
- Publication
International Orthopaedics, 2018, Vol 42, Issue 10, p2389
- ISSN
0341-2695
- Publication type
journal article
- DOI
10.1007/s00264-018-3947-2