Dual mobility hip arthroplasty wear measurement: Experimental accuracy assessment using radiostereometric analysis (RSA)

Orthopaedics & Traumatology, Surgery & Research : OTSR
V PineauC Vielpeau

Abstract

The use of dual mobility cups is an effective method to prevent dislocations. However, the specific design of these implants can raise the suspicion of increased wear and subsequent periprosthetic osteolysis. Using radiostereometric analysis (RSA), migration of the femoral head inside the cup of a dual mobility implant can be defined to apprehend polyethylene wear rate. The study aimed to establish the precision of RSA measurement of femoral head migration in the cup of a dual mobility implant, and its intra- and interobserver variability. A total hip prosthesis phantom was implanted and placed under weight loading conditions in a simulator. Model-based RSA measurement of implant penetration involved specially machined polyethylene liners with increasing concentric wear (no wear, then 0.25, 0.5 and 0.75mm). Three examiners, blinded to the level of wear, analyzed (10 times) the radiostereometric films of the four liners. There was one experienced, one trained, and one inexperienced examiner. Statistical analysis measured the accuracy, precision, and intra- and interobserver variability by calculating Root Mean Square Error (RMSE), Concordance Correlation Coefficient (CCC), Intra Class correlation Coefficient (ICC), and Bland-Alt...Continue Reading

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Citations

Dec 25, 2010·International Orthopaedics·Claude VielpeauChristine Lautridou
Oct 18, 2012·International Orthopaedics·Aron GrazioliHannes Andreas Rüdiger
Nov 2, 2013·Orthopaedics & Traumatology, Surgery & Research : OTSR·S LeclercqP H Girardin
Jan 18, 2017·Der Orthopäde·E Röhner, G Matziolis
Jan 27, 2017·International Orthopaedics·Bertrand BoyerFrederic Farizon
Dec 13, 2016·International Orthopaedics·Anna Di LauraAlister Hart
Apr 13, 2019·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Madeleine L Van de KleutMatthew G Teeter
Oct 11, 2019·EFORT Open Reviews·William G BlakeneyPascal-André Vendittoli
Apr 1, 2018·The Journal of Arthroplasty·Evan R DeckardR Michael Meneghini

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