A: The infrapatellar component of the extensor mechanism is the patellar ligament, also known as the patellar tendon. The patellar ligament originates at the lower pole of the patella, where it has contributions from the aponeurosis mentioned above, and inserts on an anterior prominence of the proximal tibia, the tibial tubercle.The correct answer would be complete disruption patellar tendon, code 842002.2. A useful reference is: Click here