Download Show Notes at: www.naileditortho.com/tkaextensor  Dr. Antonia Chen, who specializes in hip and knee replacements, is the Director of Research for the Division of Adult Reconstruction and Total Joint Arthroplasty at the Department of Orthopaedic Surgery at Brigham and Women’s Hospital (BWH) and Associate Professor of Orthopaedic Surgery at Harvard Medical School. She is a certified Orthopaedic Surgeon by the American Board, and her professional practice focuses on patients with arthritic hips and knees, as well as avascular necrosis. She also specializes in the management of complicated patients who may require revision surgery or further therapy for earlier hip and knee surgeries and gives treatment to patients who have hip and knee problems, such as infection, stiffness, and fractures. Dr. Chen obtained her undergraduate degree in Molecular, Cellular, and Developmental Biology from Yale University in New Haven, CT, and her medical degree from Rutgers Medical School, where she graduated with Distinction in Research and was admitted into the Alpha Omega Alpha Medical Honor Society. During her medical studies, Dr. Chen also earned an MBA from Rutgers Business School and is a member of the Beta Gamma Sigma Honor Society. She then completed her orthopaedic surgery residency at the University of Pittsburgh, followed by a fellowship in hip and knee replacement at the Rothman Institute in Philadelphia. Dr. Chen is an orthopaedic surgeon in active practice, as well as a committed researcher and clinician-scientist. Dr. Chen is a recognized and sought-after leader in her profession, both nationally and internationally. She also actively collaborates with fundamental scientists exploring these challenging scientific challenges in laboratories around Harvard Medical School. She is the Appropriate Use Criteria Leader for the American Academy of Orthopaedic Surgeons (AAOS) Evidence-Based Quality and Value Committee and recently served as President of the Musculoskeletal Infection Society (MSIS). Goal of episode: To develop a baseline knowledge on KA w/ Extensor Mechanism Failure . We cover: Extensor Mechanism Rupture Patellar fracture  Quad tendon rupture Patella tendon rupture Allograft extensor reconstruction Post-op protocol Complications