Eight- to Ten-Year Clinical and Radiographic Outcome of a Porous Tantalum Monoblock Acetabular Component

George Macheras, MD,* 1 Konstantinos Kateros, MD, Athanassios Kostakos, MD,* Stefanos Koutsostathis, MD,* Dimitrios Danomaras, MD,* and Panayiotis J. Papagelopoulos, MD, DSc X11

1 The first and last authors contributed equally to this work.
From the *Department of Orthopaedics, IKA Hospital, Athens, Greece;y Second Department of Orthopaedics, Athens University Medical School, Athens, Hellenic Republic, Greece; and X First Department of Orthopaedics, Athens University Medical School, ATTIKON University Hospital, Athens, Hellenic Republic, Greece.

The Journal of Arthroplasty Vol. 24 No. 5 2009

Abstract - In a prospective study, the authors used a porous tantalum monoblock acetabular component for primary total hip arthroplasty between November 1997 and June 1999. A total of 156 consecutive primary total hip arthroplasty were done in 143 patients younger than 75 years. A total of 151 hips had a follow-up time from 8 to 10 years. The average preoperative total Harris hip score of 44.0 ± 13.8 increased to 97.0 ± 6.2 at the latest follow-up. The average preoperative Oxford hip score of 43.3 ± 6.5 improved to 13.9 ± 2.3 at the latest follow-up. Radiographic evaluation including the Ein-Bild-Röntgen-Analyse (EBRA) digital system showed no radiographic evidence of gross polyethylene wear, progressive radiolucencies, osteolytic lesions, acetabular fracture, or component subsidence. There were 7 (4.5%) postoperative complications all unrelated to the acetabular component.