What is patella tendonosis (jumpers knee)? Patella tendonosis is inflammation of the patellar tendon.  The patella tendon (ligament) is the structure which runs from below the knee cap (patella) to the shin bone (tibia) and its function is to straighten the knee in activities such as jumping, walking and running. What causes patella tendonosis? Although … Continue reading Patella Tendonosis