ArticleInternational orthopaedics2017
The linear penetration rate is not relevant for evaluating wear of dual mobility cups: an explant study.
Article in International orthopaedics, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.
- Risk factors and modes of failure in the modern dual mobility implant. A systematic review and meta-analysis.BMC musculoskeletal disorders · 2021Pooled it
- Five-year polyethylene cup migration and PE wear of the Anatomic Dual Mobility acetabular construct.Archives of orthopaedic and trauma surgery · 2023Article
- Analysis of an explanted dual mobility cup after 21 years, parabolic wear pattern: A case report.SICOT-J · 2023Article
- Polyethylene wear of dual mobility cups: a comparative analysis based on patient-specific finite element modeling.International orthopaedics · 2022Article
- Is Isolated Mobile Component Exchange an Option in the Management of Intraprosthetic Dislocation of a Dual Mobility Cup?Clinical orthopaedics and related research · 2020Article
- Long-term wear of dual mobility total hip replacement cups: explant study.International orthopaedics · 2018Article
- New Challenges in Tribology: Wear Assessment Using 3D Optical Scanners.Materials (Basel, Switzerland) · 2017Article
- Dual-mobility cup: a new French revolution.International orthopaedics · 2017Article
Corrections and comments
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe linear penetration rate (LPR) has been used to estimate volumetric wear ever since metal-on-polyethylene bearings were first introduced. Annual volumetric wear and osteolysis are interrelated. The use of dual mobility cups has increased; however, the presence of two bearings needs paraclinical monitoring of wear to anticipate potential wear-related complications. Is LPR correlated to volumetric wear?
methodsNinety-eight dual mobility liner retrievals were mapped in three-dimensions (3D) with a fully automatic stripe light scanner. Martell's method was applied to 3D maps of the explants to determine how much the centres of the inner and outer bearings had shifted in the three planes, and in particular, penetration of the femoral head in the "z" axis. The total, inner and outer wear volumes were then compared to the shift in the centres of rotation (COR) and the pre-operative X-rays.
resultsThere was no relationship between wear and head penetration into the liner. There was a statistically significant relationship between the 3D centre of rotation shift and inner wear or total wear. Wear was multidirectional.
conclusionsLPR is ineffective for estimating wear of dual mobility inserts, since its wear not two-dimensional. In the future, a 3D imaging method with very thin slices could be used to monitor the wear of dual mobility inserts by measuring the shift in the centres of rotation, once artifacts are overcome.
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