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Ossification in the hand and foot of the macaque (Macaca nemestrina). I. General features

✍ Scribed by Laura Newell-Morris; Lewis H. Tarrant

Publisher
John Wiley and Sons
Year
1978
Tongue
English
Weight
951 KB
Volume
48
Category
Article
ISSN
0002-9483

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✦ Synopsis

Abstract

The appearance of the secondary centers of ossification was investigated in hand and foot radiographs of 112 fetal and neonatal Macaca nemestrina and a maturational index calculated using a scoring system that differentiated between the initial and later stages of ossification. Cumulative incremental curves of skeletal maturation, constructed by plotting the maturational indices against gestational age, demonstrated three distinct periods of ossification: the First Acceleration when primary centers appear, the Plateau, and the Second Acceleration when the secondary centers ossify. Similar curves are constructed for human prenatal and postnatal ossification. The results are also compared with those reported for M. mulatta, and the bases of the observed differences are discussed. Compared with other primates, the fetal and neonatal macaque shows a developmental precocity which may be an ontogenetic adaptation to the socioecological setting of terrestrial life.

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