RecruitingProcedureFemoral BMD Change Following Cemented or Cementless Total Knee ArthroplastyThe purpose of this study is to examine femur bone mineral density (BMD) change before and after surgery in patients receiving cemented or cementless total knee arthroplasty (TKA). performed with manual or robotic methods. 100 participants will be enrolled and can expect to be on study for up to 26 months.