Emad Mahmoud Swayeb. “Outcome Subtrochanteric Varus Osteotomy for Treatment of Perthes Disease in Short Period ”. The International Journal of Multiphysics 18, no. 1 (January 31, 2024): 153 - 162. Accessed September 14, 2025. https://www.themultiphysicsjournal.com/index.php/ijm/article/view/1831.