A cadaveric comparison of two methods for isolated talonavicular arthrodesis: Two-screws versus plate with integrated compression screw.
Publication/Presentation Date
6-1-2021
Abstract
BACKGROUND: This study compared stiffness between two constructs for talonavicular arthrodesis: a dorsomedial plating system and two partially threaded cannulated cancellous screws. We hypothesized that the plate would exhibit greater stiffness and resistance to deformation during cyclic loading.
METHODS: The constructs were implanted in eight matched pairs of cadaveric feet and subjected to axial torsion, cantilever bending in two directions, and cyclic loading to failure.
RESULTS: The two-screw constructs were significantly stiffer in plantar-dorsal bending (p = .025) and trended towards a higher number of cycles before failure than the plate group (p = .087). No significant differences were observed in internal torsion (p = .620), external torsion (p = .165), or medial-lateral bending (p = .686).
CONCLUSIONS: This study provided the first biomechanical assessment of a plating system with an integrated compression screw, which was significantly less stiff than a two-screw construct when loaded from plantar to dorsal.
Volume
27
Issue
4
First Page
405
Last Page
411
ISSN
1460-9584
Published In/Presented At
Cristino, D. M., Schmidt, E. C., Metikala, S., Mahmoud, K., Hast, M. W., & Farber, D. C. (2021). A cadaveric comparison of two methods for isolated talonavicular arthrodesis: Two-screws versus plate with integrated compression screw. Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons, 27(4), 405–411. https://doi.org/10.1016/j.fas.2020.05.010
Disciplines
Medicine and Health Sciences
PubMedID
32553424
Department(s)
Department of Surgery
Document Type
Article
