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': "Cobb's angle is used to measure the degree: \nSelect and explain. \nA. Kyphoscoliosis, B. Angular deformity of the knee, C. Extent of depression in calcaneal fracture, D. Extent of spondylolisthesis", 'role': 'user'}, {'content': "Answer: A \nExplanation: The angle between intersecting lines drawn perpendicular to the top of the top veebrae and the bottom of the bottom veebrae is the Cobb angle Cobb's angle of 10 degree is minimum angulation to define the scoliosis.", 'role': 'assistant'}]