Fig. 4.

a) Preoperative standing radiograph of a 55-year-old femalewith bilateral severe hallux valgus deformity Sgarlato’s metatarsus adductus angle (SMAA) 17° and 14.5°, intermetatarsal angle (IMA) 17.8° and 19.3°, and metatarsophalangeal angle (MPA) 35.6° and 48.1° of her left and right foot respectively. There was also overlapping toes with both second metatarsophalangeal joint (MPJ) dorsally subluxated. b) Her two-year postoperative standing radiograph showed the SMAA was 20° and 16.5°, IMA 7.2°and 6.3°, and MPA 19.9° and 13.7° of her left and right foot respectively. Both overlapping toes deformity and subluxated second MPJs were reduced and maintained. Preoperative metatarsosesamoid dissociation was also much improved. Both metatarsophalangeal joints and metatarsocuneiform joints’ congruences were improved. There was increased 2-3 intermetatarsal space from Figure 4a. c) Her preoperative pedobarographic study by F-scan revealed that most plantar force concentrated under midmetatarsal heads (red) during walking instead of the first ray (first metatarsal head and hallux) of normal feet. d) Her two-year postoperative pedobarographic F-scan revealed reduced mid metatarsal pressure bearing and increased first ray function.