Skip to Main content Skip to Navigation
Journal articles

Equivalent wear performance of dual mobility bearing compared with standard bearing in total hip arthroplasty: in vitro study

Résumé : PURPOSE: Osteolysis in total hip arthroplasty (THA) depends on polyethylene wear and dictates the survival of the prosthesis. Dual mobility in THAs, which is claimed to reduce dislocation risk, has very good long-term clinical results. However, little is known about how the liner wears in this design, compared to the standard single mobility model. METHODS: A comparative study looking at wear of a conventional ultra-high-molecular-weight polyethylene liner, using gravimetric measurement, between dual mobility implants and standard implants, was performed on a simulator in accordance with a normed protocol based on the same dimensions, environmental conditions and stresses. A linear regression test was employed. RESULTS: Under the same conditions (loading, cycles, sterilization, material and surface roughness), the gravimetric wear (for conventional polyethylene) is comparable between a standard and a dual mobility cup. This correlates to ten year follow-up results of dual mobility cup. DISCUSSION - CONCLUSION: This in vitro equivalent wear serves to confirm the very good long-term clinical results observed with dual mobility bearing, whose use should not be restricted by concerns about increased polyethylene wear.
Complete list of metadatas

https://hal.archives-ouvertes.fr/hal-01578391
Contributor : Ifsttar Cadic <>
Submitted on : Tuesday, August 29, 2017 - 10:35:07 AM
Last modification on : Friday, July 17, 2020 - 5:09:06 PM

Identifiers

Collections

Citation

Gaël Gaudin, André Ferreira, Romain Gaillard, Jean Louis Prudhon, Jacques H. Caton, et al.. Equivalent wear performance of dual mobility bearing compared with standard bearing in total hip arthroplasty: in vitro study. International Orthopaedics, Springer Verlag, 2017, 41 (3), pp. 521-527. ⟨10.1007/s00264-016-3346-5⟩. ⟨hal-01578391⟩

Share

Metrics

Record views

236