femur and knee region

head

The rounded proximal end of the thigh bone that fits into the acetabulum.

neck

The narrowed region connecting the femoral head to the shaft.

lesser trochanter

A small projection on the posteromedial proximal femur where a hip-flexor muscle attaches.

linea aspera

A prominent rough ridge running along the posterior shaft of the femur for muscle attachment.

medial condyle

The rounded inner-side surface at the distal femur that articulates with the tibia.

medial epicondyle

A projection above the medial condyle of the femur that provides ligament attachment.

greater trochanter

The large projection on the upper lateral femur, near the hip. It can be felt at the side of the hip.

lateral epicondyle

A projection above the lateral condyle of the femur, providing attachment for ligaments and muscles.

lateral condyle

The rounded outer-side surface at the distal femur that articulates with the tibia.

femur

The thigh bone, extending from the hip to the knee. It is the longest bone in the body.