Geometric and biomechanical parameters within the HIPSTRESS models that are used for calculation of stress distribution in a right artificial hip.R resultant hip force; pmax peak stress on the load bearing area; θpole angle of the stress pole; ϑabd abduction angle; ϑR angle of the resultant hip force; C horizontal distance between the center of the prosthesis head and the most lateral point on the iliac crest; H vertical distance between the center of the prosthesis head and the highest point on the iliac crest; x vertical distance between the center of the prosthesis head and the point on the greater trochanter in the direction of the femur; z distance between the center of the prosthesis head and the point on the greater trochanter perpendicular to the femur axis; l distance between the centers of the femoral heads.