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International Orthopaedics

, Volume 42, Issue 4, pp 851–857 | Cite as

Outcomes of the Bryan cervical disc replacement: fifteen year follow-up

  • Vincent Pointillart
  • Jean-Etienne Castelain
  • Pierre Coudert
  • Derek Thomas Cawley
  • Olivier Gille
  • Jean-Marc Vital
Original Paper

Abstract

Background

The CTDR is a technique that treats cervical disc degenerative disease. Initial shorter-term studies showed good clinical and radiological results.

Purpose

To assess the clinical and radiological results of Bryan cervical disc replacement (Medtronic Sofamor Danek Inc., Memphis, TN) at 15-year follow-up.

Results

This prospective study included 20 patients who underwent 22 CTDR, comprising a single-level procedure in 14 patients and two-level procedures in six patients. The mean follow-up period was 15.5 years. The mean age at the intervention was 46.2 years (range: 26–65 years). Two patients needed re-operation for recurrence of symptoms. According to Odom’s criteria, 80.0% (16 of 20 patients) had excellent outcomes, VAS for neck pain was 2.6 (0–10), for shoulder/arm pain it was 1.8 (0–7), and NDI at the final follow up was 14.9. The SF-12 PCS was 46.1, and SF-12 MCS was 51.9. Mobility was maintained in 15 of the 22 (68.2%) operated segments, range of motion (ROM) of prostheses were 9° ± 3.9° (range 4–15°). The prostheses were positioned in kyphosis in 14 of 22 levels (63.6%). There was a positive correlation between the kyphosis of the prosthesis and the occurrence of heterotopic ossification (HO), and their grade (ρ = 0.36, CI 95%[−0.68; 0.07]). HO had developed at 12 of the 22 levels (54.5%) and upper adjacent segment degeneration in 11 of 18 of patients (64.7%). All these results were not significantly different to outcomes at 8 years follow-up.

Conclusion

In a cohort of 20 patients with 15-year clinical and radiological follow-up, the Bryan CTDR has demonstrated a sustained clinical improvement and implant mobility over time, despite a moderate progression of degenerative processes at the prosthetic and adjacent levels.

Keywords

Cervical total disc replacement Heterotopic ossification Prospective study Bryan cervical prosthesis Adjacent segment disease 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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Copyright information

© SICOT aisbl 2017

Authors and Affiliations

  • Vincent Pointillart
    • 1
  • Jean-Etienne Castelain
    • 1
  • Pierre Coudert
    • 1
  • Derek Thomas Cawley
    • 1
  • Olivier Gille
    • 1
  • Jean-Marc Vital
    • 1
  1. 1.Department of Orthopaedic Surgery, Spine Unit 1University Hospital PellegrinBordeauxFrance

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