Analysis of Failure Cause of Acetabular Components Among Total Hip Replacement Arthroplasties Using RB Wagner Acetabular Cup

The total hip arthroplasty using metal on metal articulation with stainless steel was first introduced in 1938 by Wiles and the modification of this articulation with cobalt-chrome has been performed by many other orthopedic surgeons. After the McKee’s report on the poor result as high as 50% of failure rate during 15 years follow-up in 1972, the use of metal on metal articulation was decreased. Metal on metal articulation had a major problem focusing on aseptic loosening which shortened the longevity of the prosthesis. So, second generation metal on metal articulation to reduce polyethylene debris which increased osteolysis and total amount of wear rate was developed. Many authors have reported good results of a new metal on metal articulation consisted with a Cobalt-ChromMolybdenum alloy (Metasul : Sulzer Medica, Submitted: October 16, 2009 1st revision: February 19, 2010 2nd revision: June 9, 2010 3nd revision: June 18, 2010 Final acceptance: June 19, 2010