CC BY-NC-ND 4.0 · Revista Chilena de Ortopedia y Traumatología 2024; 65(02): e58-e64
DOI: 10.1055/s-0044-1787735
Artículo Original | Original Article

Suture Anchors Display Higher Resistance than Interference Screws for Biceps Tenodesis

Article in several languages: español | English
Rodrigo de Marinis
1   Unidad de Hombro y Codo, Departamento de Ortopedia y Traumatología, Facultad de Medicina, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
1   Unidad de Hombro y Codo, Departamento de Ortopedia y Traumatología, Facultad de Medicina, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
Daniel Paccot
2   Unidad de Hombro y Codo, Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile
,
Felipe Palma
3   Laboratorio LIBFE, Escuela de Kinesiología, Universidad de los Andes, Santiago, Chile
,
Pablo Besa
1   Unidad de Hombro y Codo, Departamento de Ortopedia y Traumatología, Facultad de Medicina, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
,
Felipe Toro
2   Unidad de Hombro y Codo, Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile
,
Rodrigo Guzmán
3   Laboratorio LIBFE, Escuela de Kinesiología, Universidad de los Andes, Santiago, Chile
,
René Pozo
2   Unidad de Hombro y Codo, Clínica Alemana de Santiago, Universidad del Desarrollo, Santiago, Chile
› Author Affiliations

Abstract

Objective To assess four different fixation techniques for biceps tenodesis.

Materials and Methods A total of 32 fresh frozen sheep shoulders were randomly divided into 4equal groups according to each tenodesis technique: Biotenodesis screw (BTS), SwiveLock tenodesis screw (SLS) (Arthrex, Inc., Naples, FL, United States), triple lasso-loop (TLL), and double lasso-loop (DLL). All tenodesis were performed suprapectorally at the bicipital groove. For interference screws (ISs), no additional knots were added after fixation. All specimens were tested for ultimate load to failure (ULF), and the yield point (YP) was calculated. The mode of failure was recorded for each specimen. The statistical analysis was performed using a Kruskal-Wallis test and the Dunn post-hoc test. Significance was set at p < 0.05.

Results The ULF recorded for each experimental group was as follows: BTS group = 126.2 (range: 94.8–161.1) N; SLS group = 95.8 (range: 75.9–130) N; DLL group = 208.4 (range: 195.3–219.5) N; and TLL group = 261.4 (range: 194.9–306.5) N. The mode of failure for all specimens in the IS groups was tendon pullout from fixation, while specimens in the suture anchor (SA) groups mostly failed by tendon rupture. Both SA techniques showed a significantly higher ULF and YP when compared with each IS technique (p < 0.01). There were no significant differences in terms of the ULF or YP achieved between the use of DLL and of TLL.

Conclusion In the present animal cadaveric testing model, SA techniques demonstrated a higher ULF when compared with knotless IS techniques. Specifically, within the SA techniques, the mechanical resistance to axial load of the DLL was found to be comparable that of the TLL.

Level of Evidence Basic science study.



Publication History

Received: 28 December 2022

Accepted: 02 April 2024

Article published online:
25 September 2024

© 2024. Sociedad Chilena de Ortopedia y Traumatologia. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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