Histological and radiographic study of the spheno-occipital synchondrosis in cynomolgus monkeys, Macaque Irus
Article first published online: 27 JAN 2005
Copyright © 1972 Wiley-Liss, Inc.
The Anatomical Record
Volume 172, Issue 2, pages 127–135, February 1972
How to Cite
Adams, D. and Harkness, M. (1972), Histological and radiographic study of the spheno-occipital synchondrosis in cynomolgus monkeys, Macaque Irus. Anat. Rec., 172: 127–135. doi: 10.1002/ar.1091720201
- Issue published online: 27 JAN 2005
- Article first published online: 27 JAN 2005
- Manuscript Accepted: 22 SEP 1971
- Manuscript Received: 18 MAY 1971
The spheno-occipital synchondroses of 20 cynomolgus monkeys have been examined histologically and radiographically. The findings by these two methods have been compared and correlated with the dental age of the monkeys. The radiographic examination was carried out on the isolated clivus region while serial sections were used for histological examination. Comparison of the synchondrosis by the two methods resulted in six disagreements when the synchondroses were classified as open, partly closed or closed. It is suggested that this difficulty is due to superimposition of shadows on the radiographs and small degrees of histological union not being recognised radiographically. It is further suggested that care should be taken in determining the age at closure when radiographs alone are used as the criterion. The dental age at initial closure appeared to vary widely in some cases occurring at an early mixed dentition stage and in others as late as the adolescent dentition. The closure of the synchondrosis was not related to the eruption time of any particular tooth. The pattern of closure did not conform to the classical type, i.e., from above downwards nor indeed was any consistent pattern revealed in either the radiographs or histological sections.