Axial rotation of the first metatarsal as a factor in hallux valgus.
D006215:Hallux Valgus / Q000000981:diagnostic imaging / Q000209:etiology*; D006801:Humans; D008684:Metatarsus / Q000000981:diagnostic imaging; D011859:Radiography; D012716:Sesamoid Bones / Q000000981:diagnostic imaging