Patellar Tendinitis

Patellar tendinitis is an overuse injury involving the tendon between the patella and the tibia (the patellar tendon). The patellar tendon is the attachment of the quadriceps muscle to the tibia. The role of the quadriceps, and therefore the role of the tendon, is to extend the knee. Aggravation of the patellar tendon is a common source of pain. This is caused by repetitive trauma to the tendon, frequently associated with jumping, kicking, or running. The process of injury is usually a repetitive microtrauma with acceleration and deceleration (as ...