Fig. 12-30 The ankle and foot. A, Child's ankle. Note the epiphyses for the inferior ends of the fibula and tibia. The epiphysial line of the fibula is in line with the ankle joint. B, lateral view of an adult ankle. Note the os trigonum (arrow) at the posterior aspect of the talus. C, Child's foot. Note the epiphyses for the metatarsals and phalanges. Note also the irregularity in the ossification of the phalanges of the fifth toe. D, lateral view of child's foot. Note the epiphyses for the base of the first metatarsal (arrow) and for the calcaneus (A, B, and C courtesy of V. C. Johnson, M.D., Detroit, Michigan. D courtesy of George L. Sackett, M.D., Painesville, Ohio.) Click for high resolution image.