Introduction of a new repair technique in bony avulsion of the FDP tendon: A biomechanical study

Gabriel Halát; Lukas L Negrin; Ewald Unger; Thomas Koch; Johannes Streicher; Jochen Erhart; Patrick Platzer; Stefan Hajdu

doi:10.1038/s41598-018-28250-y

Introduction of a new repair technique in bony avulsion of the FDP tendon: A biomechanical study

Titel in Übersetzung: Einführung einer neuen Reparaturtechnik bei knöchernem Ausriss der FDP-Sehne: Eine biomechanische Studie

Gabriel Halát
, Lukas L Negrin
, Ewald Unger
, Thomas Koch
, Johannes Streicher
, Jochen Erhart
, Patrick Platzer
, Stefan Hajdu

Publikation: Beitrag in Fachzeitschrift (peer-reviewed) › Artikel in Fachzeitschrift

5 Zitate (Scopus)

Abstract

Ziel dieser Studie war es, die biomechanischen Eigenschaften einer innovativen, auf einem Zugbandprinzip basierenden Operationstechnik unter Verwendung eines Nahtankers bei der Reparatur von knöchernen Avulsionen der Flexor digitorum profundus Sehne zu bestimmen. Nach einer Verletzungssimulation an 45 frischen, gefrorenen distalen Phalangen von menschlichen Leichen wurde die Reparatur mit Minifragmentschrauben, interossären Nähten und der innovativen Technik durchgeführt (15 pro Gruppe). Alle Reparaturen wurden für insgesamt 500 Zyklen belastet. Anschließend wurden die Probekörper bis zum Versagen belastet.

Titel in Übersetzung	Einführung einer neuen Reparaturtechnik bei knöchernem Ausriss der FDP-Sehne: Eine biomechanische Studie
Originalsprache	Englisch
Aufsatznummer	9906
Seiten (von - bis)	9906
Fachzeitschrift	Scientific Reports
Jahrgang	8
Ausgabenummer	1
DOIs	https://doi.org/10.1038/s41598-018-28250-y
Publikationsstatus	Veröffentlicht - 01 Dez. 2018

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title = "Introduction of a new repair technique in bony avulsion of the FDP tendon: A biomechanical study",

abstract = "The purpose of this study was to determine the biomechanical characteristics of an innovative surgical technique based on a tension banding principle using a suture anchor in the repair of bony avulsions of the flexor digitorum profundus tendon. After injury simulation in 45 fresh frozen distal phalanges from human cadavers, repair was performed with minifragment screws, interosseous sutures and the innovative technique (15 per group). All repairs were loaded for a total of 500 cycles. Subsequently the specimens were loaded to failure. Load at failure, load at first noteworthy displacement (>2 mm), elongation of the system, gap formation at the avulsion site, and the mechanism of failure were assessed. The new techniques' superior performance in load at failure (mean: 100.5 N), load at first noteworthy displacement (mean 77.4 N), and gap formation (median 0 mm) was statistically significant, which implies a preferable rigidity of the repair. No implant extrusion or suture rupture during cyclic loading were recorded when the new technique was applied. This innovative repair technique is superior biomechanically to other commonly used surgical tendon reattachment methods, particularly with respect to an early passive mobilisation protocol. Further, due to its subcutaneous position, reduction of complications may be achieved.",

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AU - Streicher, Johannes

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AU - Hajdu, Stefan

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AB - The purpose of this study was to determine the biomechanical characteristics of an innovative surgical technique based on a tension banding principle using a suture anchor in the repair of bony avulsions of the flexor digitorum profundus tendon. After injury simulation in 45 fresh frozen distal phalanges from human cadavers, repair was performed with minifragment screws, interosseous sutures and the innovative technique (15 per group). All repairs were loaded for a total of 500 cycles. Subsequently the specimens were loaded to failure. Load at failure, load at first noteworthy displacement (>2 mm), elongation of the system, gap formation at the avulsion site, and the mechanism of failure were assessed. The new techniques' superior performance in load at failure (mean: 100.5 N), load at first noteworthy displacement (mean 77.4 N), and gap formation (median 0 mm) was statistically significant, which implies a preferable rigidity of the repair. No implant extrusion or suture rupture during cyclic loading were recorded when the new technique was applied. This innovative repair technique is superior biomechanically to other commonly used surgical tendon reattachment methods, particularly with respect to an early passive mobilisation protocol. Further, due to its subcutaneous position, reduction of complications may be achieved.

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KW - Male

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Introduction of a new repair technique in bony avulsion of the FDP tendon: A biomechanical study

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