It is the only bone in the upper portion of your leg and is surrounded by your thigh muscles, including your hamstrings and quadriceps. The adult femur is typically around 18 inches long.

The femur — your thigh bone — is the largest and strongest bone in your body. When the femur breaks, it takes a long time to heal. Breaking your femur can make everyday tasks much more ...

It is found at the ends of long bones, like the head of the femur, and at the center of other bones. Red bone marrow forms most of the blood cells in the body and helps destroy old blood cells.

However, education on knee anatomy, how injuries happen ... muscle tears, and bone fractures. The femur (thigh bone), tibia (shin bone), and patella (kneecap) make up the bones of the knee.