CC BY-NC-ND 4.0 · Revista Chilena de Ortopedia y Traumatología 2021; 62(03): e174-e179
DOI: 10.1055/s-0041-1740171
Artículo Original | Original Article

Prevalence of Heterotopic Ossification after Cervical Disk Arthroplasty at 5 Years

Article in several languages: español | English
1  Departamento de Cirugía General y Anestesiología, Irkutsk State Medical University, Irkutsk, Russia
,
Vladimir A. Beloborodov
1  Departamento de Cirugía General y Anestesiología, Irkutsk State Medical University, Irkutsk, Russia
› Author Affiliations
Funding The authors have no sources of funding to declare.

Abstract

Introduction In recent years, cervical disk arthroplasty (CDA) has become widely used in patients as a substitute to anterior cervical diskectomy and fusion (ACDF). However, heterotopic ossification (HO) and spontaneous fusion after CDA have been reported, and maintenance of motion following arthroplasty can be hindered by the development of HO.

Materials and Methods The CDA procedure with Activ C and M6-C prostheses was performed on 127 patients. The mean follow-up time was of 58.4 months, ranging from 51 to 66 months.

Results Grade-1 ossifications were present in 11 (8.6%) levels. A total of 45 (35.4%) segments showed grade-2 HO. Cases of HO that led to restrictions in the range of motion were present in 13 (10.2%) patients. Fives year postoperatively, there were only 9 (7.0%) patients with grade-4 ossifications in the M6-C artificial disk prosthesis group. In the survival analysis after HO occurrence, the median survival of the patients was of 28.3 ±  5.6 months. The Activ C artificial disk prosthesis group had a statistically longer survival (49.5 ±  7.8 months) than the M6-C disk group.

Conclusion In the present study, 61.4% of the patients developed HO at a mean follow-up period of 58.4 months. In the survival analysis after HO occurrence, the median survival of the patients was of 28.3 ±  5.6 months. The Activ C artificial disk prosthesis group had a statistically longer survival (49.5 ±  7.8 months) than the M6-C disk group.

Ethical Approval

Institutional review board approval was obtained by the ethics committee at Irkutsk State Medical University (2013–51/5).




Publication History

Received: 03 June 2020

Accepted: 06 August 2021

Publication Date:
22 December 2021 (online)

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