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Published in: European Spine Journal 4/2017

01-04-2017 | Original Article

10-year follow-up after implantation of the Bryan Cervical Disc Prosthesis

Authors: Joost Dejaegher, Joris Walraevens, Johannes van Loon, Frank Van Calenbergh, Philippe Demaerel, Jan Goffin

Published in: European Spine Journal | Issue 4/2017

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Abstract

Purpose

Cervical arthroplasty is being used as an alternative for cervical fusion, but long-term follow-up results have rarely been reported. In this paper, we present 10-year follow-up results after implantation of the Bryan Cervical Disc Prosthesis in a single center.

Methods

89 patients underwent implantation of a single-level Bryan Cervical Disc Prosthesis to treat radiculopathy and/or myelopathy. Clinical (Neurological Success, Neck Disability Index (NDI), Neck- and Arm-Pain, and SF-36) and radiological follow-up was prospectively organized up to 10 years after surgery. Adverse events and second surgeries were recorded and evaluated.

Results

Ten-year follow-up data were available for 72 (81%) patients. Maintenance or improvement of the neurological state was seen in 89% of patients after 10-year follow-up. SF-36 PCS scores improved significantly at all follow-up points. SF-36 MCS improvement was significant at 4 and 6 year, but not at 8- and 10-year follow-up. Significant improvement for NDI, and Neck- and Arm-Pain scores was found for the subgroup of patients in whom these data were available. Mean angular motion of the prosthesis at 10-year follow-up was 8.6°. Mobility of the device, defined as >2° of angular motion, was reached in 81% of patients. During the study period, 21 patients (24%) developed new or recurrent radiculopathy or myelopathy, the majority of these being treated conservatively. Seven patients (8%) required 8 additional spine surgeries to treat persistent or recurrent symptoms. Of these, 2 patients (2%) were reoperated at the index level and at 5 (6%) an adjacent level.

Conclusion

In this study, favorable long-term clinical outcome after implantation of the Bryan Cervical Disc Prosthesis was seen, with the majority of prostheses remaining mobile after 10-year follow-up. However, still 6% of patients required adjacent level surgery.
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Metadata
Title
10-year follow-up after implantation of the Bryan Cervical Disc Prosthesis
Authors
Joost Dejaegher
Joris Walraevens
Johannes van Loon
Frank Van Calenbergh
Philippe Demaerel
Jan Goffin
Publication date
01-04-2017
Publisher
Springer Berlin Heidelberg
Published in
European Spine Journal / Issue 4/2017
Print ISSN: 0940-6719
Electronic ISSN: 1432-0932
DOI
https://doi.org/10.1007/s00586-016-4897-2

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