Biomechanical reasons and modelling of correcting osteotomies for Perthes disease

The work deals with biomechamical peculiarities of correcting osteotomies for Perthes disease: elimination of kinematic centre decentring, dysfunctions of musculus gluteus medius and musculus gluteus minimus, determination of permissible amount of femoral diaphysis medialization, necessity and amount of valgus deformity correction. The authors propose algorithm for biomechanical modelling and designing of surgical correction.