Fig. 1From: The change of first metatarsal head articular surface position after Lapidus arthrodesisa, b Pre- and postoperative dorsoplantar radiographs of a patient who underwent Lapidus and Akin procedure. Measurements of the HVA, TASA, DASA, PASA, and IMA. HVA – hallux valgus angle; TASA – tangential angle to the second axis; DASA – distal articular set angle; PASA – proximal articular set angle; IMA – intermetatarsal angleBack to article page