Objective:To compare different treatment methods for Vancouver type B2 fracture based on finite element analysis.Methods:The data of left femurs of 30 healthy aged volunteers

M/L Taper prosthesis and Wagner S/L prosthesis were collected.The data were inputted into finite element analysis software and Vancouver type B2 fracture was simulated. The offsets of fractures under different loads were recorded and analysed by statistic software. Results:Under both load conditions

significant statistical difference could be found among the four groups(P <0.05). With pair-wised comparisons

significant statistical differences could be found between the first group and the rest 3 groups(P<0.05)

but no statistical difference could be found among the last 3 groups.Conclusion:Wagner SL prosthesis could be used for the treatment of Vancouver type B2 fractures. The optimum length of the distal fixed part should be twice longer than the diameter of the femur. If the prosthsis with ideal length could not be used

a shorter prosthesis could be considered

but a combination of locking compressed plate is recommended.