La Pey·ro·nie \lä-pā-rȯ-nē\ , François Gigot de (1678–1747), French surgeon. La Peyronie is credited with establishing Paris as the surgical center of the world in the 18th century. Using his power and influence as surgeon to Louis XV, La Peyronie helped to raise the general standing of surgeons and surgery in France. He devoted his fortune to the advancement of surgery, helped to found the Academy of Surgery, and left a legacy for the awarding of annual prizes in surgery. In 1743 he described a disease of the penis marked by induration and fibrosis of the corpora cavernosa; it is now known as Peyronie's disease.