Cemented vs. Cementless Unicompartmental Knee Arthroplasty

The primary study objective is to evaluate a cementless partial knee system that has a modular 3-D printed porous metal tibial component and a cemented partial knee system. The hypothesis is that at minimum 2-year follow-up, fixed bearing medial partial knee replacements using cementless and cemented fixation will demonstrate no differences in clinical outcome.

Inclusion Criteria:Inclusion criteria include patients 18-85 years old, patients receiving a medial fixed bearing partial knee replacement and patients deemed suitable for both cemented and cementless fixation after review of the preoperative radiographs.Exclusion Criteria:Non-English speakers, current smokers, and patients with grossly porotic bone will be excluded. Additional exclusion criteria include more advanced other compartment arthritis at the time of surgery necessitating a total knee arthroplasty (TKA), previous high tibial osteotomy with prior hardware, and patients who are randomized but are deemed unsuitable to receive the assigned implant by the surgeon due to bone quality or bone cuts.