"one for the base: appears between 4-10 years old, and fuses with the shaft around 18 years of age"
Expected headings
"Osteology"
"The phalanges (singular: phalanx) of the feet are the tubular bones of the toes. The second to fifth toes each contain a proximal, middle and distal phalanx whereas the great toe (hallux) only contains a proximal and distal phalanx."
"Extensor tendons attach on the dorsal aspect of the foot. In the great toe, the distal phalanx receives extensor hallucis longus whereas the proximal phalanx receives extensor hallucis brevis (part of extensor digitorum brevis). An extensor expansion also exists, formed from extensor digitorum, the lumbricals and interossei. The tendons of extensor digitorum brevis join the extensor expansion on the second, third and fourth toes 1."
"The lateral plantar artery gives rise to the single plantar arch of the foot. This curves convexly across the bases of the second, third and fourth metatarsals. From this arch, plantar metatarsal arteries run forwards and bifurcate to supply the four webs and digits. The medial plantar artery does not supply the plantar arch and instead supplies the great toe. Perforating arteries from the plantar arch and its metatarsal arteries reinforce the dorsal metatarsal arteries 1."