This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Orthopaedics
[{'content': 'Diagnosis based on the lumbar spine x-ray given below is \nSelect and explain. \nA. Scoliosis, B. Kyphosis, C. Spondylolisthesis, D. Spondylolysis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Spondylolisthesis Spondylolisthesis - Forward slip of one veebra over the other. Most common at L5 - S1 level. When spondylolysis progresses to slip of veebral body, spondylolisthesis results X-ray lumbar spine Oblique view shows Scotty dog with a broken neck appearance. AP view shows Napolean hat sign Ref: Maheshwari 6e pg 284.', 'role': 'assistant'}]