PMID- 35020024
OWN - NLM
STAT- MEDLINE
DCOM- 20220405
LR  - 20220531
IS  - 1432-5195 (Electronic)
IS  - 0341-2695 (Print)
IS  - 0341-2695 (Linking)
VI  - 46
IP  - 4
DP  - 2022 Apr
TI  - Polyethylene wear of dual mobility cups: a comparative analysis based on 
      patient-specific finite element modeling.
PG  - 779-787
LID - 10.1007/s00264-022-05305-4 [doi]
AB  - PURPOSE: Concerns remain about potential increased wear with dual mobility cups 
      related to the multiple articulations involved in this specific design of 
      implant. This finite element analysis study aimed to compare polyethylene (PE) 
      wear between dual mobility cup and conventional acetabular component, and between 
      the use of conventional ultra-high molecular weight PE (UHMWPE) and highly 
      cross-linked PE (XPLE). METHODS: Patient-specific finite element modeling was 
      developed for 15 patients undergoing primary total hip arthroplasty (THA). Five 
      acetabular components were 3D modeled and compared in THA constructs replicating 
      existing implants: a dual mobility cup with a 22.2-mm-diameter femoral head 
      against UHMWPE or XLPE (DM22PE or DM22XL), a conventional cup with a 
      22.2-mm-diameter femoral head against UHMWPE (SD22PE) and a conventional cup with 
      a 32-mm-diameter femoral head against UHMWPE or XLPE (SD32PE or SD32XL). RESULTS: 
      DM22PE produced 4.6 times and 5.1 times more volumetric wear than SD32XL and 
      DM22XL (p < 0.0001, Cohen's d = 6.97 and 7.11; respectively). However, even if 
      significant, the differences in volumetric wear between DM22XL and SD32XL as well 
      as between DM22PE and SD22PE or SD32PE were small according to their effect size 
      (p < 0.0001, Cohen's |d|= 0.48 to 0.65) and could be therefore considered as 
      clinically negligible. CONCLUSION: When using XLPE instead of UHMWPE, dual 
      mobility cup with a 22.2-mm-diameter femoral head produced a similar amount of 
      volumetric wear than conventional acetabular component with a 32-mm-diameter 
      femoral head against XLPE. Therefore, XLPE is advocated in dual mobility cup to 
      improve its wear performance.
CI  - (c) 2022. The Author(s).
FAU - Wegrzyn, Julien
AU  - Wegrzyn J
AUID- ORCID: 0000-0003-0194-8664
AD  - Department of Orthopedic Surgery, Lausanne University Hospital-Centre Hospitalier 
      Universitaire Vaudois-CHUV, Hopital Orthopedique, Avenue Pierre-Decker, 4, 
      CH-1011, Lausanne, Switzerland. julien.wegrzyn@chuv.ch.
FAU - Antoniadis, Alexander
AU  - Antoniadis A
AD  - Department of Orthopedic Surgery, Lausanne University Hospital-Centre Hospitalier 
      Universitaire Vaudois-CHUV, Hopital Orthopedique, Avenue Pierre-Decker, 4, 
      CH-1011, Lausanne, Switzerland.
FAU - Sarshari, Ehsan
AU  - Sarshari E
AD  - Laboratory of Biomechanical Orthopedics, Ecole Polytechnique Federale de 
      Lausanne, Lausanne, Switzerland.
FAU - Boubat, Matthieu
AU  - Boubat M
AD  - Laboratory of Biomechanical Orthopedics, Ecole Polytechnique Federale de 
      Lausanne, Lausanne, Switzerland.
FAU - Terrier, Alexandre
AU  - Terrier A
AD  - Department of Orthopedic Surgery, Lausanne University Hospital-Centre Hospitalier 
      Universitaire Vaudois-CHUV, Hopital Orthopedique, Avenue Pierre-Decker, 4, 
      CH-1011, Lausanne, Switzerland.
AD  - Laboratory of Biomechanical Orthopedics, Ecole Polytechnique Federale de 
      Lausanne, Lausanne, Switzerland.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20220112
PL  - Germany
TA  - Int Orthop
JT  - International orthopaedics
JID - 7705431
RN  - 9002-88-4 (Polyethylene)
SB  - IM
MH  - *Arthroplasty, Replacement, Hip/adverse effects
MH  - Finite Element Analysis
MH  - *Hip Prosthesis
MH  - Humans
MH  - Polyethylene
MH  - Prosthesis Design
MH  - Prosthesis Failure
PMC - PMC8930956
OTO - NOTNLM
OT  - Dual mobility cup
OT  - Highly cross-linked polyethylene
OT  - Patient-specific modeling
OT  - Polyethylene mobile component
OT  - Polyethylene wear
COIS- JW receives royalties from Dedienne sante and serves as paid consultant for 
      Stryker Orthopaedics and Lima corporate. AA serves as paid consultant for Stryker 
      Orthopaedics. ES, MB and AT have no conflict of interest to disclose.
EDAT- 2022/01/13 06:00
MHDA- 2022/04/06 06:00
PMCR- 2022/01/12
CRDT- 2022/01/12 12:32
PHST- 2021/10/05 00:00 [received]
PHST- 2022/01/04 00:00 [accepted]
PHST- 2022/01/13 06:00 [pubmed]
PHST- 2022/04/06 06:00 [medline]
PHST- 2022/01/12 12:32 [entrez]
PHST- 2022/01/12 00:00 [pmc-release]
AID - 10.1007/s00264-022-05305-4 [pii]
AID - 5305 [pii]
AID - 10.1007/s00264-022-05305-4 [doi]
PST - ppublish
SO  - Int Orthop. 2022 Apr;46(4):779-787. doi: 10.1007/s00264-022-05305-4. Epub 2022 
      Jan 12.