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Pullout strength of all suture anchors in the repair of rotator cuff tears: a biomechanical study.

Galland, Alexandre; Airaudi, Stéphane; Gravier, Renaud; Le Cann, Sophie LU ; Chabrand, Patrick and Argenson, Jean-Noël (2013) In International Orthopaedics 37(10). p.2017-2023
Abstract
PURPOSE: We evaluated the biomechanical strength of two all suture anchors (ASA) of reduced diameter (1.4 mm) and compared them with the standard screw anchor (SA) with larger diameter (5.5 mm) used in rotator cuff tears.
METHODS: We conducted 30 uniaxial vertical pullout tests using Material Testing System Instron 5566A until failure of the anchorage defined as rupture of the threads or anchor or detachment of the anchor. Anchor fixation was on tuberosities of fresh bovine humerus bone. ASAs were spaced four millimetres apart and were compared with a control SA implanted on the same greater tubercle at two centimetres. The tests were all performed at room temperature in a dry environment. Tensile loads (10 mm/min) were applied... (More)
PURPOSE: We evaluated the biomechanical strength of two all suture anchors (ASA) of reduced diameter (1.4 mm) and compared them with the standard screw anchor (SA) with larger diameter (5.5 mm) used in rotator cuff tears.
METHODS: We conducted 30 uniaxial vertical pullout tests using Material Testing System Instron 5566A until failure of the anchorage defined as rupture of the threads or anchor or detachment of the anchor. Anchor fixation was on tuberosities of fresh bovine humerus bone. ASAs were spaced four millimetres apart and were compared with a control SA implanted on the same greater tubercle at two centimetres. The tests were all performed at room temperature in a dry environment. Tensile loads (10 mm/min) were applied parallel to the axis of insertion. A preloading of 10 N was used to overcome loading artifacts of the test sample at the beginning of the test.
RESULTS: Student's t test showed no statistically significant difference between anchors in terms of load to failure (ASA: force 265.06 ± 87.25 N versus SA : 325.35 ± 113.46 N; p = 0.09) and mean elongation at rupture (ASA : 23 ± 7 mm versus SA : 21 ± 6 mm; p = 0.46).
CONCLUSIONS: In vitro, this experimental study showed no statistically significant difference in pullout strength and displacement between ASA and SA at a chosen level of significance (p < 0.05). (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
International Orthopaedics
volume
37
issue
10
pages
2017 - 2023
publisher
Springer
external identifiers
  • scopus:84885432920
ISSN
1432-5195
DOI
10.1007/s00264-013-1984-4
language
English
LU publication?
no
id
99c84adf-a882-4c2a-9405-e7e99939907c
date added to LUP
2017-02-15 11:00:22
date last changed
2018-10-03 11:36:40
@article{99c84adf-a882-4c2a-9405-e7e99939907c,
  abstract     = {PURPOSE: We evaluated the biomechanical strength of two all suture anchors (ASA) of reduced diameter (1.4 mm) and compared them with the standard screw anchor (SA) with larger diameter (5.5 mm) used in rotator cuff tears.<br>
METHODS: We conducted 30 uniaxial vertical pullout tests using Material Testing System Instron 5566A until failure of the anchorage defined as rupture of the threads or anchor or detachment of the anchor. Anchor fixation was on tuberosities of fresh bovine humerus bone. ASAs were spaced four millimetres apart and were compared with a control SA implanted on the same greater tubercle at two centimetres. The tests were all performed at room temperature in a dry environment. Tensile loads (10 mm/min) were applied parallel to the axis of insertion. A preloading of 10 N was used to overcome loading artifacts of the test sample at the beginning of the test.<br>
RESULTS: Student's t test showed no statistically significant difference between anchors in terms of load to failure (ASA: force 265.06 ± 87.25 N versus SA : 325.35 ± 113.46 N; p = 0.09) and mean elongation at rupture (ASA : 23 ± 7 mm versus SA : 21 ± 6 mm; p = 0.46).<br>
CONCLUSIONS: In vitro, this experimental study showed no statistically significant difference in pullout strength and displacement between ASA and SA at a chosen level of significance (p &lt; 0.05).},
  author       = {Galland, Alexandre and Airaudi, Stéphane and Gravier, Renaud and Le Cann, Sophie and Chabrand, Patrick and Argenson, Jean-Noël},
  issn         = {1432-5195},
  language     = {eng},
  number       = {10},
  pages        = {2017--2023},
  publisher    = {Springer},
  series       = {International Orthopaedics},
  title        = {Pullout strength of all suture anchors in the repair of rotator cuff tears: a biomechanical study.},
  url          = {http://dx.doi.org/10.1007/s00264-013-1984-4},
  volume       = {37},
  year         = {2013},
}