Accessibility Tools

Healthy Knee

Healthy Kneed

The healthy knee is a complex hinge joint consisting of bones and healthy cartilage. The three bones that form the knee are the thighbone (femur), shinbone (tibia), and kneecap (patella). The femur and tibia are held together by ligaments, which are strong bands of tissue that stabilize the joint.

The end of your femur can be compared to a rocking chair. It has two distinct surfaces called compartments, which rest on the tibia. The third compartment is found behind the patella. All three compartments are covered with a tough lubricating tissue called cartilage.

Cartilage acts like a natural shock absorber, preventing bone on bone contact and providing a smooth, pain-free surface for the bones to glide against. The knee also contains synovial membranes, which produce synovial fluid to help lubricate and nourish the cartilage.

All patient education materials are provided by and have been reviewed by our Advisory Board of leading Orthopedic Surgeons to ensure accuracy. All materials are provided for informational purposes only and are not intended to be a substitute for medical advice from your orthopedic surgeon. Any medical decisions should be made after consulting a qualified physician. This site includes links to other web sites. takes no responsibility for the content or information contained in the linked sites.

Locations & Directions

Camalier Building
10215 Fernwood Road
Suite 502
Bethesda, MD 20817

Washington Joint Institute

Highline at Greensboro District
8401 Greensboro Drive
Suite 120
McLean, VA 22102