June 2022

A clear understanding of the anatomy and mechanics of the patellofemoral joint is critical when treating a patient that presents with a possible patellar dislocation. The alignment of the patellae should be evaluated to understand where the patellae sit in relation to the trochlea medially and laterally, as well as looking at the height of the patellae, proximal to distal. Physical exam should include assessing for a “J” sign, the patella height and patella tilt and comparing to the opposite knee.