https://acikders.ankara.edu.tr/pluginfile.php/113755/mod_url/intro/OPZ207%20Ort%20Bil%20II%20UYG-2.%20hft%20Club%20foot%20korreksiyonu%20prensipleri%20%C3%B6l%C3%A7%C3%BC%20alma.pdf