Objective we carried out a biomechanical comparison of a new point contact locking compression plate and the dynamical compression plate in in an osteoporotic comminuted radial fracture model. Methods Twelve pairs of aged osteoporotic cadaveric radii, 1cm mid-shaft transverse fracture were created to simulate comminuted fracture and fixed with PC-LCP、DCP, respectively. Then the anteroposterior four point bending、mediolateral four point bending and torsion tests was conducted to determine the bending、and torsion compress stiffness of the PC-LCP and DCP. Results Although both the bending and torsion stiffness of PC-LCP are higher than that of DCP, there are no significant differences. Conclusion The new PC-LCP has a tendency of the higher bending and torsion stiffness when used to fix the steoporotic comminuted radial fracture.