Why did Oscar Pistorius have his legs amputated actually?

Oscar Pistorius had his legs amputated below the knee due to a congenital condition known as fibular hemimelia, which resulted in the absence of fibulas in both legs. This condition led to significant deformities and difficulties in mobility, prompting the decision to amputate his legs when he was just 11 months old. He subsequently received prosthetic legs, which he used to compete in athletics, becoming a notable Paralympic champion.