New concepts in metatarsal head osteotomies: reverse buckling techniques.

The deformity of hallux abducto valgus is often accompanied by the deformity of metatarsus primus varus. These deformities are often attributed to familial tendencies, faulty structure, and impaired function. However, once manifest, the deformity of metatarsus primus varus is partially maintained through medial retrograde buckling of the abducted hallux. In selected flexible deformities, Stable surgical correction may be obtained through the principles of reverse buckling.