A na-eji ihe ntinye ikpere X4 wepụ mkpesa onye ọrịa gbasara nkwonkwo ikpere arụrụ arụ ma ọ bụ n'ụdị, ewezuga ndị ọrịa nwere mbelata ogo ndụ nke ihe mgbu metụtara arthrosis kpatara.Prostheses nkwonkwo ikpere nwere akụkụ ndị a;akụkụ femoral, ntinye, akụkụ tibial, stem, pegs, nuts, patellar components.