Patellofemoral or Patellar (Kneecap) Instability?
What is patellofemoral or patellar (kneecap) instability? Patients who have a tracking problem in the patellofemoral joint, where the patella (kneecap) does not stay in the groove on the femur, are vulnerable to a spectrum of knee conditions. These include Subluxations: in which the patella slips partially but not completely comes out of the trochlea. These partial dislocations can result in pain, swelling, a popping or cracking sensation, or stiffness...