The femur or thigh bone is the
longest, most voluminous, and strongest
bone of
mammalian bodies. It forms part of the
hip and part of the
knee.The word femur is
Latin for thigh. In strict usage, femur bone is more proper than femur, as femur refers to thigh, and femur bone refers to the bone within it. The name of the bone itself comes from os femoris, although in modern medical usage the term femur is most often applied to the bone and not the thigh. In medical Latin its
genitive is always femoris, but in
classical Latin its genitive is often feminis, and should not be confused with case forms of femina, which means woman.
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