الفهرس 
Review of literatureOnly 14 pages are availabe for public view
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Abstract
Total hip arthroplasty (THA) is one of the most successful surgical operationsthat improve function in patients with end-stage hip arthritis that is non-responsive to non-operative treatments
Instability remains a significant issue after both primaryand revision total hip arthroplasty. Dual mobility system providesan effective option in preventing and treating instability.
The dual mobility component consists of a stainless steelouter shell with a highly polished inner surface that articulateswith a mobile liner. This in turn articulates with the femoral head,which remains mobile yet captured within the liner.
Dual mobility cups can be used as primary arthroplasty andfor revision. It is even used in some studies as reconstructivemethod after tumor resection with low rates of dislocation,however the long-term survival of dual mobility was thought tobe lower than other options for total hip arthroplasty as the dualmobility component increases hip range of motion through its twoarticulations design increasing wear process, leading to limiteduse of dual mobility cups.
The goal was to achieve the greatest possible range of motion in a stable environment as well as to reduce wear.
Newest generations of DMC can be used to minimizedislocation rate even in young and active patients withsatisfactory wide range of motion. Low wear rate in these newgenerations may broaden the use of DMC in the future and mayinitiate a new indication for it to be used as standard arthroplastymodality in young and active patient.
Reviewing literature revealed that DM cups is useful alternative to traditional techniques, with low rates of instability and good overall survivorship in primary and revision THAs. The rates of dislocation and other THA-related complications in the present study were low and more viable clinically than the reported rates of other techniques.