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KMID : 1148120110010020070
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Journal of Advanced Spine Surgery
2011 Volume.1 No. 2 p.70 ~ p.76
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Analysis of Biomechanical and Clinical Results of Cervical Arthroplasty using Bryan, Prestige LP and Prodisc - C: an in vivo study
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Kim Seok-Woo
Paik Sang-Hoon
Nam Ji-Hoon
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Abstract
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Purpose: To compare change in biomechanical function at operated and adjacent segments and clinical results after inserting three different designs of cervical artificial arthroplasty devices
Material and Method: Retrospective analysis was performed for 60 patients who had undergone single level cervical artificial arthroplasty in authors’ hospital from November 2003 to January 2010. Bryan, Prestige LP and Prodisc?C artificial discs were used in 34, 17 and 9 patients respectively. We compared preoperative and postoperative biomechanical function of operated and adjacent segments radiographically and clinical results using VAS and NDI.
Results: Biomechanical results showed as follows: range of motion(ROM) of operated and overall cervical spine was well maintained postoperatively regardless of type of devices; Prodisc ? C showed statistically significant recovery of sagittal alignment at the operated segment compared to preoperative status(p=0.021); adjacent level just inferior to the operated segment showed decrease in postoperative ROM with Bryan(p=0.000); anterior intervertebral height also decreased at that segment(p=0.001); no difference showed with VAS and NDI in the three artificial disc devices.
Conclusion: Clinical results of cervical artificial arthroplasty did not show significant difference during the follow-up period, but there were statistically significant changes in biomechanical function. Therefore, adequate selection of disc device is important in cervical arthroplasty.
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KEYWORD
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Artificial disc, Design, Factor analysis, Biomechanical study
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