Spontaneous Fracture of the Odontoid Process in Rheumatoid Arthritis

Yoshiaki Toyama, Kiyoshi Hirabayashi, Yoshikazu Fujimura, Kazuhiko Satomi

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Six cases of spontaneous-fraclwe of the odontoid praeass In rheumatold arthritis are presented. Fifty-one patient:; with atlantoaxial sublimation m rheumatoid arthritis underwent surgery between 1931 and 1990. This included six patients (In 10%) who had subluxation accompanied by Facture of the odontoid without apparent trauma, The mean patient age was 58 years and all had a lonq history Of rheumatoid Srthritrs. No trauma was considered to be the cause of the fracture.This Is a fracturs caused by erosion and osteoporosis of the odontoid process due to rheumatold synovitis, aging and storoid therapy, in addition, another cause is B dynamic load produced from the instability accompanying atlantoaxial subluxation working on the odontoid in cervical wtGhSiOn. It s important remgmbur that the odontoid process is susceptible to spontaneous frariure.

Original languageEnglish
Pages (from-to)436-441
Number of pages6
Issue number10S
Publication statusPublished - 1992 Oct
Externally publishedYes


  • Odontoid process
  • Rheumatoid arthritis
  • Spontaneous fracture

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Clinical Neurology


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