Osteoarthritis (OA) is the most common joint disorder in the United States. High tibial osteotomies (HTOs) can extend the life of the knee joint in young patients with OA before requiring total knee arthroplasty (TKA) by readjusting the weight bearing axis off the region with the most cartilage loss. HTO technology currently is not indicated for morbidly obese patients because the single plate design must support the patient’s weight across a gap in the tibia. A multicomponent wedge designed to fit into the osteotomy site could support thecorrected knee geometry from the HTO as well as minimizing the incision size needed for the procedure. This would be ideal for patients who are morbidly obese by decreasing the risk of complications like osteotomy site collapse and infection. Existence of metallic interfaces in the multicomponent implant warrants studies on wear and corrosion occurring at the component interfaces to prevent metal particles leeching into the surrounding tissue. This thesis study developed a testing procedure to subject this novel implant design to cyclic loading and evaluate corresponding wear. Wear was demonstrated by loss of mass in each component and increased mass in water collected under interfaces was measured. Wear scars on surfaces where the high stress regions in the computational model were observed. A computational model was also created to inform an understanding of the high stress regions, especially at component interfaces under the loading conditions of the test. The results from this study preliminarily demonstrated that high stress regions on interfacing surfaces of the implant in the computational model is correlated with physical wear of a stainless-steel implant prototype.