下列最易发生骨坏死的是
A.关节内骨折,长期固定
B.长骨多段骨折
C.骨折合并大血管损伤
D.股骨颈囊内型骨折
参考答案:D
患者,男,40岁,因车祸致腰椎椎体骨折,6个月前已行钢板固定手术。患者自述S4~S5阶段无感觉,也无运动功能。目前留置导尿,小便可解但不能完全排空,测定膀胱残余尿量为300ml。现可独立坐稳,亦可练习抛接球训练。平卧位下可全范围屈髋,无须辅助,然伸膝不能。
患者目前的损伤平面应为()。
A.T12
B.L1
C.L2
D.L3
E.L4
She was very hardworking ________he was very lazy. As a result,she passed the examination,but
he failed. [ ]
A. when
B. since
C. while
D. as