Polyethylene wear and osteolysis with a new modular titanium acetabular component: results at 7 to 13 years.

Journal Article (Clinical Trial;Journal Article)

The first-generation and second-generation modular titanium fiber-metal acetabular components were notable for high rates of pelvic osteolysis and liner dislodgment. This is a prospective, consecutive study of 111 new modular titanium-fiber metal acetabular components with a novel polyethylene locking mechanism at a mean follow-up of 9.5 years (range, 7-13 years). The polyethylene was gamma-irradiated in air in 58 hips and gamma-irradiated in nitrogen in 54 hips. No acetabular component migrated, none were revised, and there was no liner dislodgment. Pelvic osteolysis was seen in only 2 hips. The mean linear wear rate was 0.085 mm/y (range, 0.001-0.3 mm/y). There was a significantly lower rate of wear with polyethylene liners sterilized by gamma-irradiation in nitrogen (P = .0001). The high rate of success and low rate of polyethylene wear and pelvic osteolysis at this length of follow-up may be related to the new design features of this modular acetabular component.

Full Text

Duke Authors

Cited Authors

  • Lachiewicz, PF; Hubbard, JB; Soileau, ES

Published Date

  • October 2008

Published In

Volume / Issue

  • 23 / 7

Start / End Page

  • 971 - 976

PubMed ID

  • 18534508

Electronic International Standard Serial Number (EISSN)

  • 1532-8406

Digital Object Identifier (DOI)

  • 10.1016/j.arth.2007.08.013


  • eng

Conference Location

  • United States