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The quadriceps -- a giant set of four muscles (thus the name quads) in the front of the legs -- are powerful knee protectors. They also cross two joints -- the hip and knee -- and are responsible for some hip flexion and all knee extension. They also are key in absorbing the shock of our body weight across the knee and for keeping our kneecaps aligned down the center of the knee.
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Located at the front of the thigh, the quadriceps muscles run from the hips down to the bottom of the thigh (femur) and insert into the knee cap (patella). They straighten (extend) the knee and help bend (flex) the hip.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.