What is the anatomy of the knee?
The knee joint is made up of bones, muscles, tendons, ligaments, and cartilage. Each individual piece of the complex structure works with the others to provide both fluid movement and stability in the knee. The knee executes many functions including helping the body stay in an upright position, moving to lower and raise the body and also helping to propel the body forward.
The femur (thigh bone), the tibia/fibula (shin bones) and the patella (knee cap) meet to form the knee joint. Muscles are attached to the patella bone through connecting tendons. The quadriceps muscles provide the ability to extend the knee and are connected through the quadricep tendon. The hamstring tendons provide the ability to flex the knee. Tendons transmit muscle forces to the joint. Fibrous bands called ligaments serve as stabilizers during joint movement.