At the 6 th International Patellofemoral Pain Research Retreat held in Milwaukee in October 2019, Erin Macri pulled four clinician-scientists (Dr. Simon Lack, Dr. David M. Bazett-Jones, Dr. Gretchen Salsich,

Dr. Christian Barton) into the ring, with a goal of teasing out key concepts and providing guidance on how to incorporate dynamic knee valgus into the evaluation and treatment of individuals with