Hip joint has multidirectional mobility as well as being quite stable. Bones, muscles, ligaments and cartilage which work with a harmony are essential to maintain stability of the hip during excessive loadings at various activities. Preserving the existing or correcting the disrupted harmony in the treatment of hip pathologies by arthroplasty is very important for achieving positive results. In this article, we aimed to evaluate hip joint biomechanics and related changes after arthroplasty procedures.