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Hinz N, Dehoust J, Schroeter J, Schulz AP, Hartel MJ, Lutz C, Frosch KH, Wendlandt R. Biomechanical in vitro analysis of a novel flexible implant for pubic symphysis disruption using an ultra-high molecular weight polyethylene fiber cord. Clin Biomech (Bristol, Avon) 2022; 95:105652. [PMID: 35489167 DOI: 10.1016/j.clinbiomech.2022.105652] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 04/12/2022] [Accepted: 04/19/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND Plate osteosynthesis depicts the gold standard to surgically treat pubic symphysis disruptions. However, high rates of implant failure after plate osteosynthesis are reported, probably because of the iatrogenic arthrodesis of this fibrocartilaginous joint. Therefore, flexible implants for treatment of pubic symphysis disruptions appear to be a sensible solution. METHODS In this biomechanical screening study, we designed and investigated a flexible implant, which consists of two plates connected with an ultra-high molecular weight polyethylene fiber cord. We mechanically tested eye splices as a possible fixation method of the cords by performing tensile load to failure tests. Afterwards, we developed a biomechanically appropriate plate design and cord routing between the plates. Finally, we biomechanically tested the flexible implant under tensile and shear loading until failure. FINDINGS When fixing a 1 mm ultra-high molecular weight polyethylene fiber cord with eye splices, a load at failure of 1570.74 N was detected under tensile loading. None of the eye splices failed but the cords itself ruptured. The load at failure of the designed cord routing in criss-cross technique and fixation within the plates amounts 4742.09 N under tensile and 2699.77 N under shear load. INTERPRETATION We developed a novel flexible implant for repair of pubic symphysis disruptions using ultra-high molecular weight polyethylene fiber cords connected to osteosynthesis plates. We identified eye splices as a mechanically optimal fixation method and proved that the ultra-high molecular weight polyethylene fiber cord routing and fixation of the flexible implant clearly withstands physiological forces acting on the pubic symphysis.
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Affiliation(s)
- Nico Hinz
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Trauma Hospital Hamburg, Bergedorfer Strasse 10, 21033 Hamburg, Germany.
| | - Julius Dehoust
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Trauma Hospital Hamburg, Bergedorfer Strasse 10, 21033 Hamburg, Germany.
| | - Jörg Schroeter
- Laboratory for Biomechanics, Department of Orthopedics and Trauma Surgery, University Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
| | - Arndt-Peter Schulz
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Trauma Hospital Hamburg, Bergedorfer Strasse 10, 21033 Hamburg, Germany; Fraunhofer Research Institution for Individualized and Cell-Based Medical Engineering, Mönkhofer Weg 239 a, 23562 Lübeck, Germany.
| | - Maximilian J Hartel
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Trauma Hospital Hamburg, Bergedorfer Strasse 10, 21033 Hamburg, Germany; Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
| | | | - Karl-Heinz Frosch
- Department of Trauma Surgery, Orthopaedics and Sports Traumatology, BG Trauma Hospital Hamburg, Bergedorfer Strasse 10, 21033 Hamburg, Germany; Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany.
| | - Robert Wendlandt
- Laboratory for Biomechanics, Department of Orthopedics and Trauma Surgery, University Lübeck, Ratzeburger Allee 160, 23538 Lübeck, Germany.
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Anjum S, Gupta A, Kumari S, Gupta B. Preparation and biological characterization of plasma functionalized poly(ethylene terephthalate) antimicrobial sutures. INT J POLYM MATER PO 2019. [DOI: 10.1080/00914037.2019.1655748] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Sadiya Anjum
- Department of Textile Technology, Bioengineering Laboratory, Indian Institute of Technology, New Delhi, India
| | - Amlan Gupta
- Department of Pathology, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Gangtok, India
| | - Shanti Kumari
- Department of Textile Technology, Bioengineering Laboratory, Indian Institute of Technology, New Delhi, India
| | - Bhuvanesh Gupta
- Department of Textile Technology, Bioengineering Laboratory, Indian Institute of Technology, New Delhi, India
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A Novel Cardiovascular Prosthesis Made from Woven Ultrahigh-Molecular-Weight Polyethylene Fibers, Proof of Concept in a Sheep Model. Ann Vasc Surg 2018; 52:244-254.e1. [DOI: 10.1016/j.avsg.2018.04.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 04/23/2018] [Accepted: 04/25/2018] [Indexed: 11/24/2022]
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