Positive J-Sign - Maltracking Patella on Knee Examination Inverted J sign in a 15-year-old girl with patellar pain and repeat subluxations: excessive lateral displacement of the patella in full extension, in active flexion the patella "jumps" inside the trochlea of the knee. Dr. Francisco Lara Pulido @trauma_modern #Maltracking #Positive #JSign #J #Sign #Knee #PhysicalExam #Patella #clinical #video #msk #orthopedics
