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The Bone & Joint Journal
Vol. 101-B, Issue 7 | Pages 758 - 759
1 Jul 2019
Galea VP Rojanasopondist P Laursen M Muratoglu OK Malchau H Bragdon C


The Bone & Joint Journal
Vol. 101-B, Issue 7 | Pages 760 - 767
1 Jul 2019
Galea VP Rojanasopondist P Laursen M Muratoglu OK Malchau H Bragdon C

Aims

Vitamin E-diffused, highly crosslinked polyethylene (VEPE) and porous titanium-coated (PTC) shells were introduced in total hip arthroplasty (THA) to reduce the risk of aseptic loosening. The purpose of this study was: 1) to compare the wear properties of VEPE to moderately crosslinked polyethylene; 2) to assess the stability of PTC shells; and 3) to report their clinical outcomes at seven years.

Patients and Methods

A total of 89 patients were enrolled into a prospective study. All patients received a PTC shell and were randomized to receive a VEPE liner (n = 44) or a moderately crosslinked polyethylene (ModXLPE) liner (n = 45). Radiostereometric analysis (RSA) was used to measure polyethylene wear and component migration. Differences in wear were assessed while adjusting for body mass index, activity level, acetabular inclination, anteversion, and head size. Plain radiographs were assessed for radiolucency and patient-reported outcome measures (PROMs) were administered at each follow-up.