Wiktionary
patellar ligament
n. (context anatomy English) a ligament joining the patella to the tibia
Wikipedia
Patellar ligament
The patellar ligament is the distal portion of the common tendon of the quadriceps femoris, which is continued from the patella to the tibial tuberosity. It is also sometimes called the patellar tendonas it is a continuation of the quadriceps tendon.