The J-sign, known as the lateral patellar tracking on anterior view

Patellofemoral-disorders – OrthoPaedia

Lateral view radiograph showing the trochlear bump. The yellow

Patellar dislocation - Physiopedia

Clinical feature of patient suffered pain insensitivity syndrome;

Patellar Tracking Disorder Patellofemoral Tracking Syndrome

Patella dislocation by DR.NAVEEN RATHOR

J‐sign and Q‐angle. Reproduced with authorization of Medisavvy

Affected left knee;a)initial A-p and lateral view of left knee when the

Hyung-Pil Jun's research works Dong-A University, Busan and other places

Coronal reconstruction: for better depiction of cystic structures in