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': 'Essex Lopresti lesion in upper limb \nSelect and explain. \nA. Injury to interosseous membrane, B. Radial head and DER fracture, C. Radial shaft, D. Radial shaft and radio-ulnar joint fracture', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A Kelly hemostat is passed from distal ulna to proximal radius at a 21° angle to the shaft to replicate the fibers of the central band.\nInjury to the interosseous membrane of the forearm typically occurs in conjunction with disruption of the radial head and the distal radioulnar joint.', 'role': 'assistant'}]