In the DHS, there were 2 cases with greater trochanter fractures, 1 case with over boring, 2 cases with pulmonary infections, 2 cases with urinary system infection and 1 case with coxa vara.

• 采用动力髋螺钉固定者术中大转子骨折2例，髋螺钉孔钻孔过深1例，术后发生肺部感染2例，泌尿系感染2例，髋内翻1例；