Correction method for moderate and severe degrees of hallux valgus associated with transfer metatarsalgia

Figure 1 A 58-year-old female presented with moderate hallux valgus with painless Tailor’s bunion, M2-M3 metatarsalgia, and hammer deformity of the second toe before the procedure. A: Top view of the foot; B: Medial view; C: X-ray image.

Figure 2 Scheme of the installation of the original external fixation device in a patient with moderate hallux valgus. The osteotomy is marked in orange.

Figure 3 Final radiograph after surgery. A 58-year-old female previously presented with moderate hallux valgus with painless Tailor’s bunion, M2-M3 metatarsalgia, and hammer deformity of the second toe.

Figure 4 Boxplots before and after the operation and at the final follow-up for the hallux valgus, M1M2 and M1M5 angles and American Orthopaedic Foot and Ankle Society score. AOFAS: American Orthopaedic Foot and Ankle Society.

Figure 5 Change in position of the medial sesamoid bone for each operated foot. Anteroposterior X-rays were graded using the Hardy and Clapham scale: (1) Position 1: The entire sesamoid is medial to the first metatarsal bisector; (2) Position 2: The lateral aspect of the sesamoid is tangential to the metatarsal bisector; (3) Position 3: The lateral one-third of the sesamoid overlaps the bisector; (4) Position 4: The sesamoid is centred over the bisector; (5) Position 5: The medial one-third of the sesamoid overlaps the bisector; (6) Position 6: The medial aspect of the sesamoid is tangential to the bisector; and (7) Position 7: The entire sesamoid is lateral to the bisector.