This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Orthopedics, Subject name: Surgery
[{'content': "Volkmann's ischemic contracture is associated with \nSelect and explain. \nA. Intertrochanteric femoral fracture, B. Supracondylar fracture of the humerus, C. Posterior dislocation of the knee, D. Traumatic shoulder separation", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Compromise of blood supply to the muscles of the forearm can lead to a compartment syndrome and permanent serious functional deformity of the arm. Any patient with a compressive dressing or cast of the upper extremity can experience this potential catastrophe. Whenever a patient has increasing pain in the presence of a circular dressing around the arm or forearm, the dressing should be removed immediately. If there is tenderness in the forearm on either the ulnar or dorsal aspect, a fasciotomy should be considered.', 'role': 'assistant'}]