UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Metal-on-metal total hip arthroplasty: does increasing modularity affect clinical outcome?

Ilo, KC; Hothi, HS; Skinner, JA; Hart, AJ; (2020) Metal-on-metal total hip arthroplasty: does increasing modularity affect clinical outcome? HIP International 10.1177/1120700020979275. (In press). Green open access

[thumbnail of Metal-on-metal total hip arthroplasty.pdf]
Preview
Text
Metal-on-metal total hip arthroplasty.pdf - Accepted Version

Download (6MB) | Preview

Abstract

BACKGROUND: Modularity of metal-on-metal (MoM) implants has come under scrutiny due to concerns regarding additional sources of metal debris. This study is a retrieval analysis of implants from the same manufacturer with the same MoM bearing surface. The difference between the implants was presence or absence of modular junctions. METHODS: This is a retrospective study of 31 retrieved implants from 31 patients who received a Conserve Wright Medical MoM hip prosthesis. The 31 implants consisted of 16 resurfacings and 15 implants with modular junctions; 4 conventional THAs and 11 modular-neck THAs. RESULTS: 43% of pre-revision MRI scans performed on resurfacing implants and 91% performed on the modular implants illustrated evidence of an adverse local tissue reaction. There was no difference in pre-revision blood metal ion levels or bearing surface wear between the resurfacings and modular implants. The neck-head tapers of the modular group showed low levels of material loss. However, the neck-stem tapers showed increased severity of corrosion and material loss. CONCLUSIONS: The modular implants had an increased incidence of adverse local tissue reaction. This could be related to the presence of modular junctions, particular the neck-stem junction which showed increased susceptibly to corrosion.

Type: Article
Title: Metal-on-metal total hip arthroplasty: does increasing modularity affect clinical outcome?
Location: United States
Open access status: An open access version is available from UCL Discovery
DOI: 10.1177/1120700020979275
Publisher version: http://dx.doi.org/10.1177/1120700020979275
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Hip arthroplasty, metal ions, modular, retrieval
UCL classification: UCL
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Medical Sciences > Div of Surgery and Interventional Sci > Department of Ortho and MSK Science
URI: https://discovery.ucl.ac.uk/id/eprint/10120055
Downloads since deposit
125Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item