A comparison of cervical disc arthroplasty versus dynamic cervial implant in the treatment of cervical spondylopathy：a clinical and radiological study
GUAN Li
CHEN Xiao-long
HAI Yong
LIU Yu-zeng
WANG Wen-long
YU Zhi-yi
Abstract：Objective To evaluate the clinical and radiological outcomes of cervical disc arthroplasty by Prodisc-C versus dynamic cervial implant ( DCI ) in the treatment of cervical spondylopathy.Methods All cervical spondylopathy cases undergoing cervical disc arthroplasty by Prodisc-C or dynamic cervial implant between February 2011 and February 2013 were analyzed retrospectively. There were 16 patients in anterior cervical disc arthroplasty group ( male 8, female 8 ). Age averaged 44 years ( range: 32-54 years ). There were 10 cases with cervical spondylotic myelopathy, and 6 cases with radicular spondylosis. In dynamic cervical implant group were 10 cases ( male 6, female 4 ). Age averaged 44.5 years ( range: 33-55 years ). There were 7 cases of cervical spondylotic myelopathy, and 3 cases of radicular spondylosis. Parameters as gender, age, operation time and blood loss of all the patients were analyzed. The patients were followed 1 month, 3 months, 6 months, 12 months and 24 months postoperatively. Neck disability index ( NDI ), Japanese Orthopaedic Association ( JOA ) Score and Visual Analogue Scale ( VAS ) were used to evaluate the clinical outcomes of the two groups. Anterioposterior and lateral X-ray, hyperextension and hyperflexion X-ray films before and after surgery were analyzed and cervical lordosis, the height of disc, range of motion, the distance between implant and wedge of vertebrae and heterotopic ossiifcation were measured. All statistics were done by SPSS 12.0.Results In both groups, there were no signiifcant differences in the age, gender, operation time and blood loss (P>0.05 ). In cervical disc arthroplasty group, the preoperative JOA, NDI, VAS of neck pain and upper extremity pain score and cervical lordosis, intervertebral disc angle were ( 10.3±1.4 ), ( 15.2±5.5 ), ( 6.2±2.1 ), ( 4.1±1.4 ), ( 10.0±2.1 ) °, ( 3.7±4.5 ) ° and at ifnal follow-up after operation were ( 15.8±5.4 ), ( 3±1.2 ), ( 2.9±1.8 ), ( 1.8±0.8 ), ( 16.6±3.6 ) °, ( 5.4±2.1 ) °. In DCI group preoperatively were ( 9.5±1.3 ), ( 15.6±16.3 ), ( 6.4±2.0 ), ( 4.5±1.4 ), ( 14.9±3.5 ) °, ( 3.1±2.2 ) °vs. postoperatively ( 16.2±5.8 ), ( 2.9±1.3 ), ( 2.6±1.7 ), ( 1.9±1.1 ), ( 22.3±4.6 ) °. ( 6.4±2.3 ) ° In the two groups, postoperative conditions were significantly improved (P<0.01 ). There were no significant differences preoperatively and postoperaticely in the follow-up in 2 groups ( P>0.05 ). There were no signiifcant differences in the height of operation segment and the adjacent segment, and the range of motion at any time in the two groups (P>0.05 ). Prosthesis antedisplacement of 1mm occurred in 2 cases, heterotopic ossiifcation occurred in 3 cases in cervical disc arthroplasty group, while DCI group was normal.Conclusions Cervical disc arthroplasty and dynamic cervical implant can retain the range of motion, recover and maintain the height of disc and cervical lordosis in the treatment of cervical spondylopathy with satisfactory early and mid-term results.
Keywords：Total disc replacementCervical vertebraeCervical spondylosisIntervertebral disc degenerationDynamic cervical implant
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 610-616 )