Evidence map›Paper›PMID 20022767›Full record

ArticleJournal of vascular and interventional radiology : JVIR2010

The effect of aging on deformations of the superficial femoral artery resulting from hip and knee flexion: potential clinical implications.

Christopher P Cheng, Gilwoo Choi, Robert J Herfkens, Charles A Taylor

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In one paragraph

Article in Journal of vascular and interventional radiology : JVIR, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

27 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Christopher P ChengDepartment of Surgery, Stanford University, Clark Center, Room E350, Stanford, CA 94305-5431, USA. cpc@stanford.edu
Gilwoo Choi
Robert J Herfkens
Charles A Taylor

Funding

X-RAY COMPATIBLE RF-COIL FOR MR IMAGINGP41RR009784 · NCRR · STANFORD UNIVERSITY · PI GLOVER, GARY H · 1995 to 2011
$15.0M
NCRR NIH HHS P41 RR009784NCRR NIH HHS P41RR09784
6 · The paper itself

Abstract

purposeVessel deformations have been implicated in endoluminal device fractures, and therefore better understanding of these deformations could be valuable for device regulation, evaluation, and design. The purpose of this study is to describe geometric changes of the superficial femoral artery (SFA) resulting from hip and knee flexion in older subjects. MATERIALS AND

methodsThe SFAs of seven healthy subjects aged 50-70 years were imaged with magnetic resonance angiography with the legs straight and with hip and knee flexion. From geometric models constructed from these images, axial, twisting, and bending deformations were quantified.

resultsThere was greater shortening in the bottom third of the SFA than in the top two thirds (top, 5.9% +/- 3.0%; middle, 6.7% +/- 2.1%; bottom, 8.1% +/- 2.0% [mean +/- SD]; P < .05), significant twist in all sections (top, 1.3 degrees /cm +/- 0.8; middle, 1.8 degrees /cm +/- 1.1; bottom, 2.1 degrees /cm +/- 1.3), and greater curvature increase in the bottom third than in the top two thirds (top, 0.15 cm(-1) +/- 0.06; middle, 0.09 cm(-1) +/- 0.07; bottom, 0.41 cm(-1) +/- 0.22; P < .001).

conclusionsThe SFA tends to deform more in the bottom third than in the other sections, likely because of less musculoskeletal constraint distal to the adductor canal and vicinity of knee flexion. The SFAs of these older subjects curve off axis with normal joint flexion, probably resulting from known loss of arterial elasticity with age. This slackening of the vessel enables a method for noninvasive quantification of in vivo SFA strain, which may be valuable for treatment planning and device design. In addition, the spatially resolved arterial deformations quantified in this study may be useful for commercial and regulatory device evaluation.

Indexed as

Magnetic Resonance AngiographyAgedAge FactorsAgingElasticityFemoral ArteryHip JointHumansKnee JointMaleMiddle AgedModels, CardiovascularMuscle ContractionTorsion, Mechanical

Identifiers

PMID20022767
PMCPMC2818320

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.