Pullout strength and failure mode of industrially manufactured and self-made all-suture anchors: a biomechanical analysis.
J Shoulder Elbow Surg
; 29(7): 1479-1483, 2020 Jul.
Article
en En
| MEDLINE
| ID: mdl-32197807
ABSTRACT
BACKGROUND:
This study presents a new technique for assembling an all-suture anchor from existing medical products. The biomechanical characteristics of this self-made anchor (SMA) are compared with those of an industrially manufactured all-suture anchor.METHODS:
The SMAs were made from established medical products (FiberWire #2 and 2-mm FiberTape; Arthrex, Naples, FL, USA). Pretesting was performed in biphasic polyurethane foam blocks. In the next step, 10 SMAs and 10 industrially made anchors (IMAs; 1.8-mm double-loaded Y-Knot Flex all-suture anchor; ConMed Linvatec, Largo, FL, USA) were applied with an insertion tool and tested in fresh porcine femora using a servohydraulic testing system, with a preload of 10 N and a displacement rate of 12.5 mm/s. Pullout strength and failure mode were recorded.RESULTS:
The mean load at failure in the foam blocks was 459 ± 124 N in the SMA group and 538 ± 83 N in the IMA group. In porcine bone, failure occurred at 461 ± 102 N in the SMA group and 431 ± 135 N in the IMA group. The differences in pullout strength between the 2 types of anchor were not statistically significant, either in the foam blocks (P = .17) or in porcine bone (P = .62).CONCLUSION:
A handmade all-suture anchor using 2 high-strength sutures woven into a 2-mm strip of high-strength tape did not show statistically different failure loads in polyurethane foam or in porcine metaphyseal bone in comparison with a commercially produced double-loaded all-suture anchor. The principal mode of failure in porcine bone in both groups was anchor pullout.Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Suturas
/
Procedimientos Ortopédicos
/
Anclas para Sutura
/
Fémur
Tipo de estudio:
Prognostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Shoulder Elbow Surg
Asunto de la revista:
ORTOPEDIA
Año:
2020
Tipo del documento:
Article
País de afiliación:
Alemania