Proximal femoral nail anti-rotation and dynamic hip screw in treatment of osteoporotic intertrochanteric fracture:a contrast study

Objective To investigate and compare the proximal femoral nail anti-rotation(PFNA) and dynamic hip screw(DHS) in treatment of intertrochanteric fracture.Methods 93 cases were divided into two groups according to surgical methods.51 cases were treated with PFNA,and 42 cases were treated with DHS.The clinical effect were observed.Results All the patients were followed up for 3~15(9.6±3.2) months,and firm union of fractures were obtained in all the cases.The average operation time was(60.2±15.4)min in PFNA group,shorter than that of(117.8±32.6)min in DHS group(t=4.521,P0.05);and the first exercise time in PFNA group were shorter than that in DHS group((3.6±0.6)d vs(7.1±2.2)d,t=4.769,P0.05).Complications happened in 12 cases in DHS group: 6 cases with screw cutting out femoral neck and 6 cases with coxa vara.While in PFNA group,one case died of postoperative heart failure.There was significant difference in complications between the two groups(χ2=4.001,P0.05).Conclusions PFNA has the advantages of less surgical trauma,less complications,and shorter operation time.So it is a useful device in the treatment of intertrochanteric fracture in the elderly.