There is significant controversy over whether the PCL should be retained, sacrificed or substituted in total knee arthroplasty. The available information outlined the importance of femoral roll-back for increased flexion and increased quadriceps strength. It was recommend to retain the PCL in the knee undergoing primary arthroplasty in situations where there is no more than moderate deformity of the knee (less than 25 degrees of varus or valgus deformity) and a flexion contracture of less than 30 degrees. The advantages of the PCL retaining TKA is great range of motion with effective femoral roll-back and a relatively flat tibial articular surface, restraint to transitional displacement of the knee and improving function of patellofemral joint. The advantages of the PCL-sacrificing TKA is that minimal tibial resection , the surgeon does not have to “balance” the PCL, and thus is not restricted to a particular depth of tibial bone resection but the posterior-stabilized implant requires bone resection from the intercondylar region of the femur and polyethylene wear is decreased when a conforming articular surface is implanted.