The Importance of Different Modularity of the Polyethylene Insert for Tibial Component Migration and Adaptive Bone Remodeling After Uncemented Total Knee Arthroplasty Using Trabecular Metal Technology (TMT) Zimmer NexGen®, (Monoblock vs. Modular Design)

"A prospective randomized study where the patients are randomized too receive a monoblock tibial component with trabecular metal coating (TMT Zimmer NexGen®) or a modular tibial component (TMT Zimmer NexGen®). Both prostheses are available and approved by the FDA and CE. The only difference between the implants is that of the polyethylene insert (monoblock vs. modular).~The operations are performed at the Department of Planned Elective Surgery Z, Gentofte Hospital by two experienced TKA surgeons that will be included in the research group. During surgery a minimum of 4 Tantalum markers (0.8 mm) is inserted in the bone of the proximal tibia and 6 markers are inserted in the polyethylene insert."

"A prospective randomized study where the patients are randomized too receive a monoblock tibial component with trabecular metal coating (TMT Zimmer NexGen®) or a modular tibial component (TMT Zimmer NexGen®). Both prostheses are available and approved by the FDA and CE. The only difference between the implants is that of the polyethylene insert (monoblock vs. modular).~The operations are performed at the Department of Planned Elective Surgery Z, Gentofte Hospital by two experienced TKA surgeons that will be included in the research group. During surgery a minimum of 4 Tantalum markers (0.8 mm) is inserted in the bone of the proximal tibia and 6 markers are inserted in the polyethylene insert."