The Franctures have been fixed by using L- shaped condyle steel plate+bolt. L - shapedcondyle steel plate and compressed steel plate+bolt fixation. These three different internal fixationmethods have been compared in order to provide scientific basis for clinical practices. Methods To 9fresh cadaver femora samples, we perform mechanics analysis for the internal fixation of femoracondyle experimentally using stress analysis and theoretically using finite element method(FEM).Results It has been proved that the internal fixation using L- shaped condyle steel plate+bolt isbetter than that using L- shaped condyle steel plate and compressed steel plate+b(ilt. There existdistinct differences in stress and displacement between two condyles(p<0.01). Conclusion Thecombined fixation of L - shaped condyle stress plate+bolt is a very good internal fixation methodfor curing the fracture of femora condyle. It deserves to be put into application and populatization.