What to Know for Selecting Cruciate-Retaining or Posterior-Stabilized Total Knee Arthroplasty

The two main goals of total knee arthroplasty (TKA) are to obtain a stable knee with functional improvement and to correct deformity. 1)There has been much debate about which is better for achieving these goals between cruciateretaining (CR) and posterior-stabilized (PS) TKAs. 2)Each type of prosthesis has its own advantages and disadvantages (Table 1), [3][4][5][6][7] and most studies have failed to prove which type is superior to the other in terms of functional outcome, range of motion (ROM), kinematics, and longterm survival rate.2,8,9) CR and PS TKAs present not only conceptual but also technical differences, which the surgeon should be well familiar with.However, many surgeons tend to select the type of prosthesis on the basis of their own training and experience.4) Some surgeons favor the use of a specific type of prosthesis, but others select one on an ad hoc basis.10) The selection of the type of prosthesis must be based on a great store of knowledge rather than on dogmatic preconceptions or rigid preferences.4) The topics of this review article include situations where CR TKA is difficult to perform, surgical tips for CR TKA, and the differences in surgical procedures between CR and PS TKAs.In addition, we sought to review the literature comparing clinical results, kinematics, long-term survival rate, and postoperative noise generation between CR and PS TKAs.