Knee Arthroplasty
A 68-year-old woman with severe tricompartmental knee osteoarthritis is scheduled for primary total knee arthroplasty. She has failed conservative management including physiotherapy, weight loss, and intra-articular injections. Pre-operative radiographs show 8 degrees of varus deformity with bone-on-bone changes in the medial compartment. Her BMI is 32 and she has well-controlled hypertension. The surgeon is planning a cruciate-retaining TKA. Regarding total knee arthroplasty:
Mark each as TRUE or FALSE
The goal of TKA is to restore mechanical alignment with a neutral mechanical axis (hip-knee-ankle an...
Cruciate-retaining (CR) designs preserve the PCL which provides femoral rollback in flexion and prop...
The tibial cut should be in 10 degrees valgus; the ACL is always preserved in TKA; a flexion gap tha...
Ligament balancing is essential: in varus knees, the medial structures (MCL, posteromedial corner, p...
Complications include infection (1-2%), stiffness, instability, periprosthetic fracture, aseptic loo...
Answer the questions to see explanations
Click T (True) or F (False) for each option