When we talk about Knee Tendinosis, there are two distinct kinds. To understand this, you need to understand a little bit of anatomy. The Quadriceps Muscle is the powerful muscle on the front of the thigh. It focuses down to a tendon that attaches to the knee cap (Pattela). There is then a second knee tendon called the Patellar Tendon. The Patellar Tendon connects the bottom half of the knee cap, with the top of the Tibia (the bigger of the two bones below the knee).
- QUADRICEPS TENDINOSIS: A Tendinosis of the tendon that runs from the Quadriceps (front thigh muscles) to the knee cap.
- TENDINOSIS OF THE PATELLAR TENDON: A Tendinosis of the tendon that runs from the knee cap, down to its attachment point about an inch or so below — at the top of the Tibia or shin bone.
KNEE TENDON ANATOMY
KNEE TENDONS & LIGAMENTS
Notice that the Quadriceps Tendon is found just above the kneecap, and the Patellar Tendon (Ligamentum Patellae in picture on right) is found just below the knee. Patellar Tendinosis is associated with OSGOOD SCHLATTER'S SYNDROME in kids, adolescents, and young adults.
QUADRICEPS TENDON / PATELLAR TENDON
It is my humble opinion that these two tendons (the Patellar Tendon & Quadriceps Tendon) are really one tendon with a large sesemoid bone (the patella, or knee cap) living within it --- a phenomenon commonly seen elsewhere in the body. This does not negate the differences between the differences between the two problems. Also be aware that Knee Tendinosis (Quadriceps Tendinosis & Patellar Tendinosis) and Knee Tendinititis (Quadriceps Tendinitis & Patellar Tendinitis) are frequently confused with each other. To learn more about this particular brand of knee pain, read TENDINITIS VERSUS TENDINOSIS.