Acetabular Polyethylene Wear and Acetabular Inclination and Femoral Offset
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Open Access
- 1 November 2009
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Clinical Orthopaedics and Related Research
- Vol. 467 (11), 2895-2900
- https://doi.org/10.1007/s11999-009-0845-3
Abstract
Restoration of femoral offset and acetabular inclination may have an effect on polyethylene (PE) wear in THA. We therefore assessed the effect of femoral offset and acetabular inclination (angle) on acetabular conventional (not highly cross-linked) PE wear in uncemented THA. We prospectively followed 43 uncemented THAs for a minimum of 49 months (mean, 64 months; range, 49–88 months). Radiographs were assessed for femoral offset, acetabular inclination, and conventional PE wear. The mean (± standard deviation) linear wear rate in all THAs was 0.14 mm/year (± 0.01 mm/year) and the mean volumetric wear rate was 53.1 mm3/year (± 5.5 mm3/year). In THAs with an acetabular angle less than 45°, the mean wear was 0.12 mm/year (± 0.01 mm/year) compared with 0.18 mm/year (± 0.02 mm/year) in those with a reconstructed acetabular angle greater than 45°. Reproduction of a reconstructed femoral offset to within 5 mm of the native femoral offset was associated with a reduction in conventional PE wear (0.12 mm/year versus 0.16 mm/year). Careful placement of the acetabular component to ensure an acetabular angle less than 45° in the reconstructed hip allows for reduced conventional PE wear. Level of Evidence: Level II, prospective study. See Guidelines for Authors for a complete description of levels of evidence.Keywords
This publication has 27 references indexed in Scilit:
- The creep and wear of highly cross-linked polyethyleneThe Journal of Bone and Joint Surgery. British volume, 2008
- Patient-related predictors of implant failure after primary total hip replacement in the initial, short- and long-termsThe Journal of Bone and Joint Surgery. British volume, 2006
- Mid-term wear characteristics of an uncemented acetabular componentThe Journal of Bone and Joint Surgery. British volume, 2005
- Radiographic Methods for the Assessment of Polyethylene Wear After Total Hip ArthroplastyJournal of Bone and Joint Surgery, 2005
- Soft-tissue balancing of the hip: the role of femoral offset restoration.2005
- Reduced Variability of Acetabular Cup Positioning with Use of an Imageless Navigation SystemClinical Orthopaedics and Related Research, 2004
- Patient Factors and Wear in Total Hip ArthroplastyClinical Orthopaedics and Related Research, 2004
- New aspects in the histological examination of polyethylene wear particles in failed total joint replacementsActa Histochemica, 2002
- Joint Motion And Surface Contact Area Related To Component Position In Total Hip ArthroplastyThe Journal of Bone and Joint Surgery. British volume, 1997
- Polyethylene wear in total hip arthroplasty in patient-matched groups: A comparison of stainless steel, cobalt chrome, and titanium-bearing surfacesThe Journal of Arthroplasty, 1993