2014
DOI: 10.1186/1749-799x-9-48
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Suture anchor fixation strength with or without augmentation in osteopenic and severely osteoporotic bones in rotator cuff repair: a biomechanical study on polyurethane foam model

Abstract: BackgroundThe purpose of the present study was to compare the results of various types of anchor applications with or without augmentation in both osteopenic and severely osteoporotic bone models.MethodsTwo different types of suture anchors were tested in severely osteoporotic (SOP) and osteopenic polyurethane (PU) foam blocks using an established protocol. An Instron machine applied static loading parallel to the axis of insertion until failure, and the mean anchor failure strengths were calculated. The mode … Show more

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Cited by 29 publications
(15 citation statements)
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“…According to in vitro tests, all sutures were failed at around 280N. That matches previous studies by Aktay et al, and Er et al, [5], [22], that find it of order 300 N. A common area of failure with metallic anchors is at the suture–anchor interface where the suture is serially abraded by the anchor’s eyelet [19]. The eyelet design along with surface roughness and the arc of contact between the eyelet and suture all contribute to the frictional resistance created.…”
Section: Discussionsupporting
confidence: 89%
“…According to in vitro tests, all sutures were failed at around 280N. That matches previous studies by Aktay et al, and Er et al, [5], [22], that find it of order 300 N. A common area of failure with metallic anchors is at the suture–anchor interface where the suture is serially abraded by the anchor’s eyelet [19]. The eyelet design along with surface roughness and the arc of contact between the eyelet and suture all contribute to the frictional resistance created.…”
Section: Discussionsupporting
confidence: 89%
“…7) In a biomechanical test, the cementing technique showed the highest pull-out strength. 5,10) However, there maybe a few concerns related to healing or washout before fully curing of the cement. There is an exothermic curing in PMMA cement, and it could violate the surrounding tissues and nerves.…”
Section: Discussionmentioning
confidence: 99%
“…One common application of PUR foam is the development and testing of medical devices [ 10 , 11 ]. For this purpose, certified PUR foam (Sawbones, Vashon, WA, USA) with standardized structure and density are used.…”
Section: Introductionmentioning
confidence: 99%