Mr Paul Trikha | Specialist Knee Surgeon on Instagram: "🦵🏽Patella Maltracking 🦵🏽The J-sign refers to the ‘J’ track the patella takes from extension to flexion- the laterally positioned patella shifts medially to engage in the femoral trochlea groove. 🦵🏽On extension, the reverse occurs, the patella disengages from the groove and subluxes laterally. 🦵🏽 J sign is critical in the evaluation of dynamic maltracking of the patella 🦵🏽 The following may contribute to to the J sign: - Patella al