What is the kneecap called?
The kneecap is called the patella. Gray's Anatomy (1918) describes it as a small, flat, triangular sesamoid bone embedded in the tendon of the quadriceps.
What it is
- A small, flat, triangular sesamoid bone embedded in the tendon of the quadriceps.
- Its front surface is rough for the tendon; its back surface is smooth cartilage that glides on the femur.
- It protects the front of the knee joint and improves the leverage of the quadriceps.
Where it is
- In the front of the knee joint.
- Sits in the trochlear groove at the lower end of the femur.
- Attached above to the quadriceps tendon and below to the patellar ligament running to the tibia.
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Last verified: 2026-07-18
- Best Anatomy Answers is an educational reference about human anatomy. It is not medical advice — for any health concern, talk to a licensed medical professional.