TopicKneeβ£Approach to painful TKR?β£Usually in which side is the loosening?β£What is catastrophic wear? β£How will you revise this knee? #πβ£What is the AORI classification?β£What does contained vs uncontained defects mean? What are the implications?β£How do you reconstruct the bone loss?β£Revision TKR - What is the zonal concept?β£What is the difference between sleeve and cones?β£What is the difference between wedge and blocks?β£What are the options of managing zone 1 defects?