الفهرس 
Anatomy of the Hip JointOnly 14 pages are availabe for public view
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Abstract
Despite the undisputed role of total hip arthroplasty (THA) in
restoring function and mobility to patients with end-stage hip
osteoarthritis, the longevity of the artificial joints is limited In other
words, with longer follow-up, some deterioration is evident.
As yet, the most notable factor limiting the longevity of hip
arthroplasty, particularly in young, active individuals, is wear of the
bearing surface and the ensuing aseptic loosening.
The release of wear particles, mostly from the articulating bearing
surfaces, activates a complex inflammatory pathway that leads to
loosening of the prosthesis and osteolysis.
The role of the bearing surface has become even more impor- tant
as patients undergoing arthroplasty seek high-perfor- mance prostheses
to meet their expectations.
Since joint arthroplasty was first introduced surgeons and
engineers have made adjustments to try to increase its longevity and
improve outcomes. One extremely important development is the
introduction of a new generation of bearing surfaces. Improvements in
design, advancements in manufacturing, and introduction of alternative
bearing surfaces have positively affected THA outcomes over recent
decades. Introduction of bearing surfaces with better wear
characteristics led to a decline in the release of biologically active wear
debris and tremendously reduced wear-related failures. Furthermore,