Riddle DL, Sando T, Tarver T, et al. - In this research, a systematic review of shared decision making (SDM) trials were performed in patients considering knee arthroplasty (KA) to define how SDM was supported and the impact on care received. Researchers carried out to search multiple bibliographic databases from inception to December 31, 2019. This study observed 6 eligible randomized trials (4 included KA and hip arthroplasty), all of which evaluated the same proprietary decision aid (DA) (Treatment Choices for Hip or Knee Osteoarthritis) with some adding other materials to support SDM. For SDM, data in patients considering KA is mostly limited to a single DA. This tool has not been shown to promote SDM, impact treatment decisions or satisfaction with care, while use of this decision aid improves patient knowledge about their treatment options. Further study is needed to support SDM directly, and evaluate impacts on treatment decisions, functional outcomes, and satisfaction.