The patellar tendon connects the patella, or kneecap, with the tibia and is responsible for aiding the thigh muscles in straightening the leg out. This condition involves the inflammation of this tendon which weakens it and small tears may also occur. It usually occurs as a result of activities like running or jumping. When the tendon actually tears, a popping sensation is usually felt. Symptoms include swelling, bruising, tenderness, cramping, difficulty straightening the knee and pain while walking.
Tears can often be corrected via surgery but the tendonitis is less severe. Often a brace is worn during healing and specific exercises will be completed to restore strength and range of motion.