This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
[{'content': 'Von Rosen Splint is used in - \nSelect and explain. \nA. CTEV, B. CDH, C. Fracture shaft of femur, D. Fracture tibia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Used in CDH\n\ni) Bachelor's or frog leg / lorenz cast\nii) Von-Rosen's splint\niii) Pavlic Harness", 'role': 'assistant'}]