This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fracture Management, Subject name: Orthopaedics
[{'content': 'Continuous fixed traction is provided by: \nSelect and explain. \nA. Thomas splint, B. BB splint, C. Hamilton Russel, D. Gallows', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thomas splint is commonly used for the immobilization of hip and thigh injuries. The modified Thomas splint adapted the original Thomas splint to include a traction screw and foot plate and limb suppo built into the splint body.', 'role': 'assistant'}]