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https://hdl.handle.net/2440/57168
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Type: | Journal article |
Title: | Wear of a highly cross-linked polyethylene liner: a preliminary RSA study |
Author: | Campbell, D. Mercer, G. Nilsson, G. Wells, V. Field, J. Callary, S. |
Citation: | European Journal of Orthopaedic Surgery and Traumatology, 2009; 20(1):23-27 |
Publisher: | Springer France |
Issue Date: | 2009 |
ISSN: | 1633-8065 1432-1068 |
Statement of Responsibility: | David Campbell, Graham Mercer, Kjell-Gunnar Nilsson, Vanessa Wells, John R. Field and Stuart A. Callary |
Abstract: | Wear induced peri-prosthetic osteolysis and aseptic loosening remain the major contributing factors to failure of total hip arthroplasty. To reduce wear particles from acetabular liners, the process of polyethylene cross-linking has been modified. In this study, we examine the wear of Marathon™ acetabular liners using Radiostereometric Analysis. Thirty patients were enrolled in a prospective cohort study. Femoral head penetration was calculated for 25 patients at 6 months, 1 and 2 years postoperatively. The mean proximal head penetration was 0.067 mm at 6 months, 0.113 mm at 1 year and 0.120 mm at 2 years. The mean three-dimensional femoral head penetration was 0.240 mm at 6 months, 0.230 mm at 1 year and 0.232 mm at 2 years. For both parameters, there was no measurable wear between 1 and 2 years, and the mean annual linear wear was less than 0.06 mm/year, which is less than the suggested osteolysis threshold for polyethylene. All patients demonstrated a dramatic improvement in clinical scores. These results were comparable with other studies that used alternative techniques with conventional radiography to evaluate wear for Marathon™. Long-term studies using the RSA method are recommended to further quantify the clinical performance of this polyethylene liner. |
Keywords: | Hip Wear RSA Polyethylene Radiostereometric analysis Cross-linked |
DOI: | 10.1007/s00590-009-0486-y |
Published version: | http://dx.doi.org/10.1007/s00590-009-0486-y |
Appears in Collections: | Aurora harvest Orthopaedics and Trauma publications |
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