Normal anatomy ■Classification: ■Structure ■Compact bone ■Spongy bone Shape ■Long tubular bone ■Short tubular bone ■Flat bone ■Irregular boneNormal anatomy ◼ Classification ： ◼ Structure ◼ Compact bone ◼ Spongy bone ◼ Shape ◼ Long tubular bone ◼ Short tubular bone ◼ Flat bone ◼ Irregular bone