title: One-year results of the ANCHOR trial of EndoAnchors for the prevention and treatment of aortic neck complications after endovascular aneurysm repair.
abstract: OBJECTIVE
  EndoAnchors have been used to address proximal aortic neck complications including type Ia endoleaks and endograft migration after endovascular aortic aneurysm repair (EVAR).
  
  
  METHODS
  The study population included 100 patients with one-year follow-up in the ANCHOR study. A primary cohort (N = 73) comprised patients who underwent EndoAnchor implantation at the time of an initial EVAR and a Revision cohort (N = 27) included patients treated remote from EVAR. A hostile neck was defined for neck length <10 mm, neck diameter >28 mm, angulation >60°, conical configuration or significant mural thrombus or calcium.
  
  
  RESULTS
  Baseline anatomy included neck length of 17 ± 14 mm, diameter of 27 ± 5 mm, and angulation of 35 ± 18°; 83% of patients had hostile necks. Over 18 ± 4 months of clinical follow-up, six patients (6%) underwent aneurysm-related reinterventions. There were no aneurysm ruptures. Over 13 ± 2 months of imaging follow-up, freedom from type Ia endoleak was 95% in the Primary Arm and 77% in the Revision Arm (P = .006). Aneurysm sacs regressed > 5 mm within one year in 45% of the Primary cases and in 25% of the Revisions. Aneurysm expansion > 5 mm occurred in one revision patient.
  
  
  CONCLUSIONS
  Despite a high frequency of hostile neck anatomy, proximal neck complications were relatively infrequent after EndoAnchor use.
authors.affiliation: University of Alabama-Birmingham, Birmingham, AL, USA wjordan@uabmc.edu.
authors.forename: William D
authors.initials: WD
authors.lastname: Jordan
authors.affiliation: Vascular Group, PLLC, Albany, NY, USA.
authors.forename: Manish
authors.initials: M
authors.lastname: Mehta
authors.affiliation: Syntactx, New York, NY, USA.
authors.forename: Kenneth
authors.initials: K
authors.lastname: Ouriel
authors.affiliation: Carolinas Medical Center, Charlotte, NC, USA.
authors.forename: Frank R
authors.initials: FR
authors.lastname: Arko
authors.affiliation: Vascular Institute of Central Florida, Orlando, FL, USA.
authors.forename: David
authors.initials: D
authors.lastname: Varnagy
authors.affiliation: El Camino Hospital, Mountain View, CA, USA.
authors.forename: James
authors.initials: J
authors.lastname: Joye
authors.affiliation: Lexington Medical Center, Lexington, SC, USA.
authors.forename: William M
authors.initials: WM
authors.lastname: Moore
authors.affiliation: St. Antonius Hospital, Nieuwegein, The Netherlands.
authors.forename: Jean-Paul P M
authors.initials: JP
authors.lastname: de Vries
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001014:Aortic Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery*; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation*; D057867:Endoleak / Q000000981:diagnostic imaging / Q000209:etiology / Q000517:prevention & control*; D057510:Endovascular Procedures / Q000009:adverse effects / Q000295:instrumentation*; D005060:Europe; D005260:Female; D005548:Foreign-Body Migration / Q000000981:diagnostic imaging / Q000209:etiology / Q000517:prevention & control*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D012307:Risk Factors; D015607:Stents; D053441:Suture Anchors; D013536:Suture Techniques / Q000009:adverse effects / Q000295:instrumentation*; D013997:Time Factors; D016896:Treatment Outcome; D014481:United States
keywords: Aneurysm; EndoAnchors; Type Ia endoleak; aorta; endovascular; migration