This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fracture Neck of Femur, Subject name: Orthopaedics
[{'content': "Which prosthesis is shown below in the X-ray? \nSelect and explain. \nA. Austin Moore's prosthesis, B. Thompson prosthesis, C. Articular resurfacing, D. Birmingham hip replacement", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Austin Moore prosthesis.Note the fenestrations in stem of Austin Moore\'s prosthesis for ingrowth of bone and initiation of self-locking process. This is used when the calcar femorale is sufficient. When the calcar femorale is deficient, Thompson prosthesis is used with bone cement.Image source - style="font-family: Times New Roman, Times, serif">', 'role': 'assistant'}]