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Acta Orthop Traumatol Turc. 2018 Mar;52(2):127-133. doi: 10.1016/j.aott.2017.11.009. Epub 2017 Dec 28.

Novel ultrasound assisted suture anchor system using the BoneWelding® technology yields a comparable primary stability in osteopenic and healthy human humeri as a benchmark anchor.

Author information

1
Department of Orthopaedics, Physical Medicine and Rehabilitation, Medical Center of the University of Munich (Ludwig-Maximilians-University), Munich, Germany. Electronic address: Mehmet.guelecyuez@med.uni-muenchen.de.
2
Laboratory for Biomechanics and Experimental Orthopaedics of the University of Munich (Ludwig-Maximilians-University), Germany.
3
Department of Orthopaedics, Physical Medicine and Rehabilitation, Medical Center of the University of Munich (Ludwig-Maximilians-University), Munich, Germany.
4
TÜV SÜD Product Service GmbH, Active Medical Products 3, Munich, Germany.
5
SportWelding GmbH, Schlieren, Switzerland.
6
Orthopädie Oberland, Weilheim, Germany.

Abstract

INTRODUCTION:

The aim of this biomechanical study was to evaluate the primary stability of the SportWelding® Sombrero 3.6 mm suture anchor system in osteopenic and healthy cadaveric humeri.

METHODS:

The Sombrero® and BioCorkscrew® anchors were deployed in 8 osteopenic and 4 healthy cadaver humeri after the bone mineral density (BMD) measurements of the 32 specimens. Both anchors were loaded with a USP Nr. 2 FiberWire® suture. An established cyclic testing protocol was performed. The maximum failure load (Fmax), the system displacement and the modes of failure were recorded.

RESULTS:

The Fmax and system displacement of the Sombrero® in osteopenic and healthy humeri was equivalent to the Bio-Corkscrew® benchmark anchor; there were no significant differences in the maximum failure loads and system displacement values. Only anchor and suture dislocations were observed; suture ruptures did not occur.

CONCLUSION:

This study shows that the Sombrero® yields similar maximum failure loads and system displacement values as the established Bio-Corkscrew® benchmark anchor. The primary stability of the Sombrero® and Bio-Corkscrew® seems to be independent of the bone mineral quality. This relatively small-sized polymer anchor is independent of the BMD and may be an alternative to established suture anchors in rotator cuff repair.

KEYWORDS:

Biomechanics; Bone density; Bone welding; Osteoporosis; Rotator cuff; Suture anchor; Ultrasound

PMID:
29290535
PMCID:
PMC6136304
DOI:
10.1016/j.aott.2017.11.009
[Indexed for MEDLINE]
Free PMC Article

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