Biomechanical comparison of different implants for PIP arthrodesis.

Autor: Döhner C; University of Giessen and Marburg, Department of Orthopaedics and Traumatology, Marburg, Germany; Department of Orthopaedics and Trauma Surgery, Lahn-Dill-Kliniken, Wetzlar, Dillenburg, Germany., Beyerle H; University of Giessen and Marburg, Department of Orthopaedics and Traumatology, Marburg, Germany., Graw JA; Department of Anesthesiology and Intensive Care Medicine, Ulm University Hospital, Ulm, Germany., Soost C; FOM University of Applied Sciences, Essen, Germany., Burchard R; University of Giessen and Marburg, Department of Orthopaedics and Traumatology, Marburg, Germany; Department of Orthopaedics and Trauma Surgery, Lahn-Dill-Kliniken, Wetzlar, Dillenburg, Germany. Electronic address: burcharr@staff.uni-marburg.de.
Jazyk: angličtina
Zdroj: Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons [Foot Ankle Surg] 2023 Oct; Vol. 29 (7), pp. 518-524. Date of Electronic Publication: 2023 Feb 23.
DOI: 10.1016/j.fas.2023.02.008
Abstrakt: Background: Surgical correction of hammertoe deformities with arthrodesis of the proximal interphalangeal joint (PIP) is one of the most frequent forefoot procedures. Recently, new intramedullary fixation devices for PIP arthrodesis have been introduced. The aim of this study was to compare a newly developed absorbable intramedullary implant made of magnesium (mm.PIP), an already available intramedullary implant made of titanium (PipTree), and the classical Kirschner-wire (K-wire).
Methods: The three intramedullary devices (mm.PIP, PipTree, and K-wire) for PIP arthrodesis were compared. A classical arthrodesis of the PIP joint was performed on fifty-four composite synthetic bone pairs. After arthrodesis, torsional load, weight-bearing and cyclic load tests were performed, and stability of the synthetic bone pairs was analyzed.
Results: The mm.PIP was the most torsion resistant (mm.PIP vs. PipTree and K-wire, p < 0.001). The PipTree showed the best overall stability during cyclic weight-bearing simulation (PipTree vs. mm.PIP and K-wire, p < 0.001). K-wire demonstrated the highest breaking loads during bending tests (K-wire vs. mm-PIP and PipTree, p < 0.001).
Conclusion: Biomechanical properties of two new intramedullar implants, the bioresorbable mm.PIP made of magnesium and the PipTree made of titanium, were found to be comparable to the biomechanical properties of a K-wire which is commonly used for this procedure. Future work should be directed towards a clinical assessment of the bioabsorbable fixation devices for hammertoe procedures.
Competing Interests: Declarations of interest The authors declare that they have no competing interests.
(Copyright © 2023 European Foot and Ankle Society. Published by Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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