title: Clinical and radiographic reports following cervical arthroplasty: a 24-month follow-up.
abstract: We reviewed patients with cervical disc prosthesis replacement for single-level cervical disc disease to evaluate its clinical effect and maintenance of cervical spine motion. Fifteen patients underwent Bryan artificial cervical disc replacement and were followed-up for at least 24 months. No neurological or vascular complications were observed during or after operation. JOA, VAS, and NDI scores showed statistical significant improvement in our follow-up. The procedure achieved an 87% (13/15) satisfactory rate at 24-month evaluations according to Odom's criteria. The range of motion (ROM) of the cervical spine, treated segment, adjacent segment, and functional spinal unit (FSU) decreased at early follow-up, but they recovered to the preoperative level at 12- and 24-month follow-up. Also, preoperative lordosis of the cervical spine and FSU were not only maintained but also even improved during the 24-month follow-up. No obvious degeneration of adjacent discs were found at MRI. There were no cases of prosthesis subsidence or extrusion. The cervical disc prosthesis showed a good clinical outcome; it also restored ROM of the cervical spine and reestablished cervical curvature in our 24-month follow-up. But to be sure of its long term effect, a longer follow-up is needed.
authors.affiliation: Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, China.
authors.forename: Yan Cai
authors.initials: YC
authors.lastname: Yang
authors.forename: Lin
authors.initials: L
authors.lastname: Nie
authors.forename: Lei
authors.initials: L
authors.lastname: Cheng
authors.forename: Yong
authors.initials: Y
authors.lastname: Hou
mesh_terms: D000328:Adult; D019643:Arthroplasty, Replacement / Q000295:instrumentation / Q000379:methods*; D001847:Bone Diseases / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000601:surgery*; D002574:Cervical Vertebrae / Q000000981:diagnostic imaging* / Q000502:physiology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007595:Joint Prosthesis; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D016896:Treatment Outcome