The femur is the thigh bone, the longest bone in the body. The lower end joins the tibia (shin) to form the knee joint. The upper end is rounded into a ball (or head of the femur) that fits into a socket in the pelvis to form the hip joint. Just below the head are a constriction, or neck, and two large processes-an upper, lateral greater trochanter and a lower, medial lesser trochanter. These processes provide attachments for muscles of the legs and buttocks. The neck of the femur gives the...

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    Full Femur Description

    [Continued from above] . . . hip joint a wide range of movement, but it is a point of weakness and a common site of fracture.