The adaptive stereotypes of feet support reactions in patients with coxarthrosis after performing endoprosthetics of the hip

Podography study has been performed in 40 patients with bilateral coxarthrosis of III stage before treatment and within 6-18 months after endoprosthetic surgery of the hip. Three forms of the adaptive stereotype of feet support reactions for walking without additional supporting means have been singled out. I type: there is no asymmetry of step cycle temporal parameters; the asymmetry of foot loading statically and dynamically doesn't exceed 10 %; the path of pressure general centre on a horizontal plane keeps having a clear typical butterfly-like pattern. II type: the asymmetry of step cycle temporal parameters is not more than 20 %; the double-support period of step is increased for both limbs; the asymmetry of foot loading statically and dynamically is increased up to 30 %; the path of pressure general centre on a horizontal plane has an asymmetric butterfly-like pattern. III type: the asymmetry of step cycle temporal parameters exceeds 20 %; front/back push ratio is less than 1.0; the asymmetry of foot loading statically and dynamically is increased up to 50 %; the path of pressure general centre on a horizontal plane has no butterfly-like pattern.