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kneecap
(redirected from kneecaps)

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kneecap (patella), saucer-shaped bone at the front of the knee joint; it protects the ends of the femur, or thighbone, and the tibia, the large bone of the foreleg. The kneecap is embedded in the tendon tissue of the quadriceps femoris, a large thigh muscle. As the leg bends and straightens, the kneecap glides up and down in a groove of the femur. Dislocation of the kneecap is a common athletic injury, occurring when stress on the powerful extensor muscles that straighten the leg pulls the kneecap to one side. See skeleton skeleton, in anatomy, the stiff supportive framework of the body. The two basic types of skeleton found among animals are the exoskeleton and the endoskeleton. The shell of the clam is an exoskeleton composed primarily of calcium carbonate.
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kneecap [′nē‚kap]
(anatomy)


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About a week ago I suddenly developed pain overnight in both kneecaps.
A period of rapid growth in a young student may produce temporary inadequacy of the quadriceps and cause the dancer with a jarrete configuration (knock-knees or saber-shaped legs) to push back and lock the kneecaps instead of placing the weight more forward on the feet.
 
 
 
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