Fig. 3.

Test setup with a specimen, mounted on the testing machine in a 20° valgus position ensuring physiological weight bearing and avoiding distal bending moment of the locking compression plate (LCP). The head of the prosthesis was used as a ball-and-socket joint, connecting the specimen to the actuator. Distally the specimen was connected to the load cell via a ball-and-socket-joint. A Schanz-screw in the PMMA block prevented rotational instability around the load axis of the specimens. Cameras on the left recorded the movements of the retroflective marker sets attached to the constructs