ABSTRACT
This chapter discusses the features of an ideal replacement arthroplasty, the materials that are used for manufacturing hip joint prostheses, complications of replacement arthroplasty, factors can reduce the incidence of infection and the techniques are known to reduce the incidence of mechanical loosening. Patient-related features provide a good range of movement, complete pain relief, and mechanical stability within the joint. Implant-related features include low coefficient of friction, low rate of wear, biocompatible, and good mechanical strength. Surgery-related features include secure fixation to the skeleton, and revisable in component failure. Components of hip joint prostheses can be made of: ultra-high-molecular-weight polyethylene, and cobalt-chromium alloys. Most implants in use are metal on polyethylene. Newer implants can be metal on metal or ceramic on polyethylene, which have a lower friction coefficient. Gentle handling of tissues, adequate haemostasis and good suturing techniques can reduce the incidence of infection.
