Olympic champ shares her knee replacement experience 🎿 Patient Perspective of Robotic-assisted Partial Knee Replacement by Lindsey Vonn, Olympic and World Cup Ski Champion . Partial knee arthroplasty (PKA), or unicompartmental knee arthroplasty when associated with a single compartment, has been performed for isolated single compartment knee osteoarthritis since the '70s. Partial #KneeReplacement can be carried out in the medial, lateral and/or patellofemoral compartments . When compared to tot