急性上消化道出血是指发生在下列哪些器官部位的急性出血() ["A．食管","B．胃十二指肠","C．回肠","D．胰腺","E．胆道"]
无菌性骨坏死最常见的部位是() ["A．肱骨头","B．髌骨","C．膝部股骨外髁","D．桡骨小头","E．股骨头"]
关节置换术异位骨化发生率__________，常发生在术后__________内。
髋关节疾病的早期表现是______________、__________及____________。
扁桃体癌最常见的病理类型是() ["A．腺癌","B．低分化癌和未分化癌","C．腺样囊性癌","D．移行上皮癌","E．高分化鳞癌"]
人工关节置换术的目的是____________、____________、______________和______________。
