The patellar tendon connects the knee cap to the shin bone and works with the muscles on the front of the thigh to extend the knee. Patellar Tendonitis, also known as Jumper's Knee, is an inflammation of that tendon and is commonly seen in athletes whose sports require frequent jumping. BioSkin Knee Braces are designed to alleviate pain with medical-grade compression and allow the tendon to heal with pressure-relieving straps surrounding the knee joint.