The long bone in the upper leg or thigh, connecting the hip to the knee; it is the strongest and usually the longest bone in the human body.
From Latin “femur” meaning “thigh” or “thigh bone.” The Latin word was taken directly into scientific and medical English.
Your femur quietly carries enormous loads—step by step, it holds several times your body weight when you run or jump. It’s so strong that in many crashes, the car breaks before this single bone does.
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