This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pediatric Ohopedics, Subject name: Orthopaedics
[{'content': 'Triple ahrodesis involves: \nSelect and explain. \nA. Calcaneocuboid, talonavicular and talocalcaneal, B. Tibiotalar, calcaneocuboid and talonavicular, C. Ankle joint, calcaneocuboid and talonavicular, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Triple Ahrodesis: Fusion of three joints Talonavicular - most difficult to fuse Talocalcaneal Calcaneocuboid Indicated only if there is a strong contraindication to ahroplasty (eg, previous infection) or to salvage a failed ahroplasty Indication: >10 yrs of age for treatment of CTEV', 'role': 'assistant'}]