Femoroacetabular impingement (FAI) is recognized as a pathomechanical process that leads to hip osteoarthritis (OA) [1]. Despite many attempts in the past to characterize the mechanism by which cam FAI (aspherical femoral head-neck deformity) leads to OA, to the best of our knowledge, no in vitro study has integrated clinical patient-specific data to determine stresses and strains within the symptomatic hip joint. The aim of this research is to examine the effects of cam FAI towards hip OA using finite element analysis (FEA) and patient-specific CT, kinetic, and kinematic data.