Hallux flexus: Sequela of residual clubfoot
from Clinical Research on Foot & Ankle
A dorsal bunion, or hallux flexus, is a deformity where the first metatarsal is in a dorsiflexed position and the proximal phalanx of the hallux is in a plantarflexed position usually articulating with the plantar aspect of the 1st metatarsal head. There are a variety of etiologies for this condition; the one most evaluated has been the occurrence of a dorsal bunion following clubfoot surgery. Docquier noted an incidence of 16 percent of dorsal bunions in his series, while Kuo noted only 4.4 percent in his series.
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