Fig. 1.

a A preoperative radiograph of a 53-year-old woman with hallux valgus. The 1–2 MT distance (CD) was measured as the shortest distance between the centre of the first metatarsal head (D) and the longitudinal axis of the second metatarsal (AB). b An immediately postoperative radiograph showed wide 1–2 MT distance after stabilisation using locking plate and screws. c An immediately postoperative radiograph of a 36-year-old woman showed lateral translation of the metatarsal shaft and narrow 1–2 MT distance after stabilisation using Kirschner wires