TKA Design
A 64-year-old active man with isolated medial compartment osteoarthritis and an intact ACL and PCL is being considered for total knee arthroplasty. His preoperative ROM is 0-130 degrees with no fixed flexion deformity. The PCL appears healthy intraoperatively. The surgeon is deciding between cruciate-retaining (CR) and posterior-stabilized (PS) TKA designs. Regarding the biomechanics and outcomes of CR vs PS TKA:
Mark each as TRUE or FALSE
CR-TKA preserves the posterior cruciate ligament, which provides femoral rollback during flexion, ma...
PS-TKA uses a cam-post mechanism where the tibial post engages the femoral cam at approximately 70-9...
PS-TKA consistently demonstrates superior clinical outcomes to CR-TKA across all studies; CR-TKA has...
Multiple meta-analyses show no consistent difference in functional outcomes, range of motion, or sur...
CR-TKA advantages include bone preservation (no femoral box), maintained proprioception, and theoret...
Answer the questions to see explanations
Click T (True) or F (False) for each option