TOPIC: RANDOM MIX
A 55-year-old female presents with acquired adult flatfoot deformity (AAFD). Clinical examination reveals a flexible hindfoot valgus, inability to perform a single-limb heel rise, and significant forefoot abduction with more than 40% uncoverage of the talonavicular joint on weight-bearing AP radiographs. According to the Myerson modification of the Johnson and Strom classification, what is the most appropriate surgical intervention?
A
Medial displacement calcaneal osteotomy (MDCO) and flexor digitorum longus (FDL) transfer to the navicular
B
Lateral column lengthening (e.g., Evans osteotomy) combined with medial soft-tissue reconstruction and FDL transfer
C
Gastrocnemius recession and isolated FDL transfer to the medial cuneiform
D
Triple arthrodesis (subtalar, talonavicular, and calcaneocuboid joint fusion)