Question: Please - What is a Leggy Calves Pertness disease? 

Answer: Legg-Calvé-Perthes disease: A hip disorder in children due to interruption of the blood supply to the head of the femur (the ball in the ball-and-socket hip joint), causing it to deteriorate. \n\nThe disease is most common at age 6 to 9, tends to affect boys, but is more severe in girls.
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