Document Detail

Longitudinal ruptures of polyester knitted vascular prostheses.
MedLine Citation:
PMID:  11331843     Owner:  NLM     Status:  MEDLINE    
AIM: The purpose of the study was the characterization of a type of rupture occurring on warp-knitted polyester vascular prostheses.
MATERIALS AND METHODS: We studied 20 cases of warp-knitted polyester vascular prostheses that were explanted from humans that showed a longitudinal rupture as a part of a collaborative retrieval program. All the prostheses were immediately fixed in a 10% formaldehyde solution after their explantation in the operating room. The clinical data of these cases were recorded. The explants were photographed, washed to eliminate the surrounding tissues, and photographed again. The ruptures were characterized with macroscopic examination, optical stereomicroscopy, and scanning electron microscopy.
RESULTS: The mean duration of implantation of the prostheses was 16.0 +/- 3.3 years (range, 9-20.7 years). The prostheses were Cooley Double Velour (n = 15) and Microvel Double Velour (n = 5). There were 16 aortobifemoral bypass grafts, 1 aorto-biiliac, 1 aorto-aortic, 1 iliofemoral, and 1 axillobifemoral. The longitudinal ruptures occurred on two specific parts of the prostheses: the guide line (6 cases) and the remeshing line (11 cases). In three cases both lines were affected. Scanning electron microscopy showed major degradation of the trilobar filaments of the velour and gradual ruptures of the flat filaments of the remeshing and guide lines.
CONCLUSIONS: In this study, we have identified a specific mechanism of late (9-20 years) longitudinal rupture of knitted polyester prostheses consisting of degradation of the polyester filaments along the remeshing and guide lines that run the length of the graft.
N Chakfe; G Riepe; F Dieval; J F Le Magnen; L Wang; E Urban; M Beaufigeau; B Durand; H Imig; J G Kretz;
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of vascular surgery     Volume:  33     ISSN:  0741-5214     ISO Abbreviation:  J. Vasc. Surg.     Publication Date:  2001 May 
Date Detail:
Created Date:  2001-05-02     Completed Date:  2001-06-07     Revised Date:  2012-10-03    
Medline Journal Info:
Nlm Unique ID:  8407742     Medline TA:  J Vasc Surg     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1015-21     Citation Subset:  IM    
Department of Cardio-Vascular Surgery, Les Hôpitaux Universitaires de Strasbourg, France.
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MeSH Terms
Aorta, Abdominal / surgery
Blood Vessel Prosthesis*
Blood Vessel Prosthesis Implantation
Femoral Artery / surgery
Iliac Artery / surgery
Microscopy, Electron, Scanning
Prosthesis Failure*
Time Factors
Reg. No./Substance:
0/Polyesters; 0/velour
Comment In:
J Vasc Surg. 2001 May;33(5):1131-2   [PMID:  11331865 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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