Early follow-up outcomes after treatment of XXXX with the discover cervical disc prosthesis.

@entity1 @entity602 @entity179 @entity158 @entity2736 @entity717 @entity614
BACKGROUND CONTEXT: Although anterior cervical decompression and fusion has been used successfully in the treatment of symptomatic @entity614 and/or @entity602 , biomechanical studies have suggested possible deleterious effects of cervical fusion on adjacent level kinematics. The emergence of cervical arthroplasty as an alternative to arthrodesis may restore a more normal spinal movement and reduces a kinematic strain on adjacent segments. To date, with existing prostheses, the risk adjacent segment disease has not been proven to be reduced using artificial disc replacement. PURPOSE: The study was designed to investigate the surgical techniques and clinical effects of the Discover artificial cervical disc prosthesis in a Chinese population and observe the stability and range of movement in the early and immediate postoperative period. STUDY DESIGN/SETTING: Our clinical study design was prospective, concurrently enrolled, and single-center trial of the artificial cervical disc prosthesis (DePuy Spine, Raynham, MA, USA) in the treatment of @entity1 with single- and two-level @entity179 of the cervical spine. @entity1 SAMPLE: Procedure was performed in 25 @entity1 . OUTCOME MEASURES: The functional spinal unit (FSU) and global angles, segmental and overall range of motion, FSU heights, and clinical parameters checked with @entity717 ( @entity717 ), Japanese Orthopedic Association (JOA), Odom's scale, and visual analog scale (VAS) @entity158 score were assessed. METHODS: Twenty-five @entity1 (26 discs) consecutively underwent cervical arthroplasty using the Discover artificial cervical disc in our hospital. Clinical and radiologic follow-up was performed. The radiographic parameters evaluated included the treated segments and the overall curvature of the cervical spine. RESULTS: All the @entity1 were assessed between 12 months and 18 months after surgery (average 15.3 months). According to Odom's scale, all 25 @entity1 (26 levels) had good to excellent outcomes by independent assessment. Mean @entity717 , JOA, and VAS scores showed statistical improvements in the early and immediate postoperative period. The range of movement recovered to the preoperative value during the follow-up. The treated segment ultimately showed preservation of movement when compared with preoperative levels. No prosthesis subsidence or excursion was identified, and no @entity2736 was found in the replaced levels. CONCLUSION: These early results from a small cohort demonstrate that cervical arthroplasty with the Discover artificial cervical disc for the treatment of @entity179 may provide a good clinical outcome and preserves some motion postoperatively. Although early outcomes are promising, this is also a relatively new technology and prosthesis, long-term follow-up studies with larger @entity1 numbers are required to assess safety and efficacy compared with alternative treatments.
