Author(s): Cautilli GP, Beight J, Yao B, Hozack WJ
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Abstract Three hundred thirteen primary uncemented total hip arthroplasties were performed in a 20-month period using Universal cups and Taperloc stems with titanium heads. The follow-up period was 2 to 5 years and 303 cups were measured radiographically for polyethylene wear, demarcation, osteolysis, and migration. Analysis was performed clinically, radiographically, and via inspection at revision. Twenty-three cups (7.5\%) had greater than 0.5 mm polyethylene wear. Eleven of these loosened radiographically (4\%) and eight (3\%) required revision. All cup failures showed evidence of polyethylene wear as a contributory cause of failure. The average rate of wear was 0.5 mm/yr. Thin polyethylene liners (less than 6 mm) and titanium heads were used in all failed implants both of which have been abandoned.
This article was published in Semin Arthroplasty
and referenced in Journal of Biotechnology & Biomaterials