Comparison of Suture-Based Anchors and Traditional Bioabsorbable Anchors in Foot and Ankle Surgery.
Citation: Journal of Foot & Ankle Surgery. 56(1):3-7, 2017 Jan - FebPMID: 27989342Institution: MedStar Union Memorial HospitalDepartment: Orthopaedic SurgeryForm of publication: Journal ArticleMedline article type(s): Comparative Study | Journal ArticleSubject headings: *Absorbable Implants | *Achilles Tendon/su [Surgery] | *Calcaneus/su [Surgery] | *Suture Anchors | *Tensile Strength | Adult | Ankle Joint/su [Surgery] | Biomechanical Phenomena | Cadaver | Female | Humans | Male | Middle Aged | Suture TechniquesYear: 2017Local holdings: Available online through MWHC library: 2003 - present, Available in print through MWHC library:1999-2007ISSN:- 1067-2516
Item type | Current library | Collection | Call number | Status | Date due | Barcode |
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Journal Article | MedStar Authors Catalog | Article | 27989342 | Available | 27989342 |
Available online through MWHC library: 2003 - present, Available in print through MWHC library:1999-2007
We compared the pullout strength of a suture-based anchor versus a bioabsorbable anchor in the distal fibula and calcaneus and evaluated the relationship between bone mineral density and peak load to failure. Eight paired cadaveric specimens underwent a modified Brostrom procedure and Achilles tendon reattachment. The fibula and calcaneus in the paired specimens received either a suture-based anchor or a bioabsorbable suture anchor. The fibular and calcaneal specimens were loaded to failure, defined as a substantial decrease in the applied load or pullout from the bone. In the fibula, the peak load to failure was significantly greater with the suture-based versus the bioabsorbable anchors (133.3 +/- 41.8 N versus 76.8 +/- 35.3 N; p = .002). No significant difference in load with 5 mm of displacement was found between the 2 groups. In the calcaneus, no difference in the peak load to failure was found between the 2 groups, and the peak load to failure with 5 mm of displacement was significantly lower with the suture-based than with the bioabsorbable anchors (52.2 +/- 9.8 N versus 75.9 +/- 12.4 N; p = .003). Bone mineral density and peak load to failure were significantly correlated in the fibula with the suture-based anchor. An innovative suture-based anchor had a greater peak load to failure compared with a bioabsorbable anchor in the fibula. In the calcaneus, the load at 5 mm of displacement was significantly lower in the suture-based than in the bioabsorbable group. The correlation findings might indicate the need for a cortical bone shelf with the suture-based anchor. Suture-based anchors could be a viable alternative to bioabsorbable anchors for certain foot and ankle procedures. Copyright (c) 2016 American College of Foot and Ankle Surgeons. Published by Elsevier Inc. All rights reserved.
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