This textbook provides an authoritative reference on one of the most problematic entities in the pathology of the knee. Throughout the text, esteemed international experts highlight their clinical insights for ensuring optimal non-surgical and surgical outcomes when treating anterior knee pain and patellar instability. The chapters are revised with the latest updates and new chapters are featured focusing upon robotic-assisted patellofemoral replacement, predictive diagnostic models in anterior knee pain patients based on artificial intelligence, brain network functional connectivity in anterior knee pain patients, and many other hot topics in the field.