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The variations of the talar articular facets in 230 Northeastern Thai calcanei were studied and classified. The specimens were 100 wet calcanei and 130 dry calcanei. Three types were considered: type A (calcanei with two articular facets for the talar head, with four subtypes); type B (calcanei with the anterior and middle talar articular facets coalescing into a common articular facet for the talar head, with two subypes); type C (calcanei with the anterior, middle and posterior talar articular facets coalescing into a sigle facet for the talus). It is interesting that our studies of the two groups of specimens yielded similar percentages of calcaneal types, 40% of type A, 59% of type B, and 0-1% of type C. Therefore, the overall results reflect the type distribution of both wet and dry groups. In 230 calcanei we found 40% (93 cases) of type A calcanei, 59% (136 cases) of type B calcanei and 0.43% (1 case) of type C calcaneus. The incidence of type B was significantly higher than type A (P<0.05). comparing the sexes (in wet calcanei), we found that the incidence of type B in females was significantly higher than in males (p<0.05).
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