PMID- 27837329
OWN - NLM
STAT- MEDLINE
DCOM- 20180418
LR  - 20190318
IS  - 1432-5195 (Electronic)
IS  - 0341-2695 (Linking)
VI  - 41
IP  - 3
DP  - 2017 Mar
TI  - Highly crosslinked polyethylene: a safe alternative to conventional polyethylene 
      for dual mobility cup mobile component. A biomechanical validation.
PG  - 507-512
LID - 10.1007/s00264-016-3334-9 [doi]
AB  - PURPOSE: Dual mobility cup (DMC) consists of a cobalt-chromium (CoCr) alloy cup 
      articulated with a polyethylene (PE) mobile component capturing the femoral head 
      in force using a snap-fit technique. This biomechanical study was the first to 
      evaluate and compare the generation of cracks in the retentive area of DMC mobile 
      components made of highly crosslinked PE (XLPE) or conventional ultra-high 
      molecular weight PE (UHMWPE). METHODS: Eighty mobile components designed for a 
      52-mm diameter Symbol(R) DMC (Dedienne Sante, Mauguio, France) and a 28-mm diameter 
      femoral head were analyzed. Four groups of 20 mobile components were constituted 
      according to the PE material: raw UHMWPE, sterilized UHMWPE, annealed XLPE and 
      remelted XLPE. Ten mobile components in each group were impacted with a 28-mm 
      diameter CoCr femoral head using a snap-fit technique. The occurrence, location 
      and area of the cracks in the retentive area were investigated using micro-CT 
      (Skyscan 1176(R), Bruker, Aarsellar, Belgium) with a 35 mum nominal isotropic voxel 
      size by two observers blinded to the PE material and impaction or not of the 
      mobile components. RESULTS: Compared to conventional UHMWPE, the femoral head 
      snap-fit did not generate more or wider cracks in the retentive area of annealed 
      or remelted XLPE mobile components. CONCLUSION: This biomechanical study suggests 
      that XLPE in DMC could be a safe alternative to conventional UHMWPE regarding the 
      generation of cracks in the retentive area related to the femoral head snap-fit.
FAU - Malatray, Matthieu
AU  - Malatray M
AD  - Department of Orthopedic Surgery - Pavillon T, Hopital Edouard Herriot, Hospices 
      Civils de Lyon, 5, place d'Arsonval, 69437, Lyon, France.
AD  - INSERM UMR 1033, Universite de Lyon, Lyon, France.
FAU - Roux, Jean-Paul
AU  - Roux JP
AD  - INSERM UMR 1033, Universite de Lyon, Lyon, France.
FAU - Gunst, Stanislas
AU  - Gunst S
AD  - Department of Orthopedic Surgery - Pavillon T, Hopital Edouard Herriot, Hospices 
      Civils de Lyon, 5, place d'Arsonval, 69437, Lyon, France.
FAU - Pibarot, Vincent
AU  - Pibarot V
AD  - Department of Orthopedic Surgery - Pavillon T, Hopital Edouard Herriot, Hospices 
      Civils de Lyon, 5, place d'Arsonval, 69437, Lyon, France.
FAU - Wegrzyn, Julien
AU  - Wegrzyn J
AD  - Department of Orthopedic Surgery - Pavillon T, Hopital Edouard Herriot, Hospices 
      Civils de Lyon, 5, place d'Arsonval, 69437, Lyon, France. 
      julien.wegrzyn@chu-lyon.fr.
AD  - INSERM UMR 1033, Universite de Lyon, Lyon, France. julien.wegrzyn@chu-lyon.fr.
LA  - eng
PT  - Journal Article
DEP - 20161111
PL  - Germany
TA  - Int Orthop
JT  - International orthopaedics
JID - 7705431
RN  - 0 (Polyethylenes)
SB  - IM
MH  - Arthroplasty, Replacement, Hip/*instrumentation
MH  - Biomechanical Phenomena
MH  - Femur Head/surgery
MH  - *Hip Prosthesis
MH  - Humans
MH  - Materials Testing
MH  - Polyethylenes/adverse effects/*therapeutic use
MH  - *Prosthesis Design
MH  - Prosthesis Failure
MH  - Time Factors
OTO - NOTNLM
OT  - *Cracks
OT  - *Dual mobility cup
OT  - *Highly crosslinked polyethylene
OT  - *Total hip arthroplasty
OT  - *UHMWPE
EDAT- 2016/11/12 06:00
MHDA- 2018/04/19 06:00
CRDT- 2016/11/13 06:00
PHST- 2016/09/21 00:00 [received]
PHST- 2016/10/31 00:00 [accepted]
PHST- 2016/11/12 06:00 [pubmed]
PHST- 2018/04/19 06:00 [medline]
PHST- 2016/11/13 06:00 [entrez]
AID - 10.1007/s00264-016-3334-9 [pii]
AID - 10.1007/s00264-016-3334-9 [doi]
PST - ppublish
SO  - Int Orthop. 2017 Mar;41(3):507-512. doi: 10.1007/s00264-016-3334-9. Epub 2016 Nov 
      11.