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A cadaveric comparison of two methods for isolated talonavicular arthrodesis: Two-screws versus plate with integrated compression screw.
Foot Ankle Surg. 2020 Jun 07 [Online ahead of print]FA

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.

Authors+Show Affiliations

Biedermann Lab for Orthopaedic Research, University of Pennsylvania, 3737 Market Street, 10th Floor Suite 1050, Philadelphia, PA 19104, United States. Electronic address: danielle.cristino@pennmedicine.upenn.edu.Biedermann Lab for Orthopaedic Research, University of Pennsylvania, 3737 Market Street, 10th Floor Suite 1050, Philadelphia, PA 19104, United States. Electronic address: elainesc@pennmedicine.upenn.edu.Department of Orthopaedic Surgery, Pennsylvania Hospital, Farm Journal Building, 5th Floor 230 West Washington Square, Philadelphia, PA 19106, United States. Electronic address: sreenivasulu.metikala@pennmedicine.upenn.edu.Department of Orthopaedic Surgery, Pennsylvania Hospital, Farm Journal Building, 5th Floor 230 West Washington Square, Philadelphia, PA 19106, United States. Electronic address: karim.mahmoud@pennmedicine.upenn.edu.Biedermann Lab for Orthopaedic Research, University of Pennsylvania, 3737 Market Street, 10th Floor Suite 1050, Philadelphia, PA 19104, United States. Electronic address: hast@pennmedicine.upenn.edu.Department of Orthopaedic Surgery, Pennsylvania Hospital, Farm Journal Building, 5th Floor 230 West Washington Square, Philadelphia, PA 19106, United States. Electronic address: daniel.farber@pennmedicine.upenn.edu.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32553424

Citation

Cristino, Danielle M., et al. "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, 2020.
Cristino DM, Schmidt EC, Metikala S, et al. A cadaveric comparison of two methods for isolated talonavicular arthrodesis: Two-screws versus plate with integrated compression screw. Foot Ankle Surg. 2020.
Cristino, D. M., Schmidt, E. C., Metikala, S., Mahmoud, K., Hast, M. W., & Farber, D. C. (2020). 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. https://doi.org/10.1016/j.fas.2020.05.010
Cristino DM, et al. A Cadaveric Comparison of Two Methods for Isolated Talonavicular Arthrodesis: Two-screws Versus Plate With Integrated Compression Screw. Foot Ankle Surg. 2020 Jun 7; PubMed PMID: 32553424.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - A cadaveric comparison of two methods for isolated talonavicular arthrodesis: Two-screws versus plate with integrated compression screw. AU - Cristino,Danielle M, AU - Schmidt,Elaine C, AU - Metikala,Sreenivasulu, AU - Mahmoud,Karim, AU - Hast,Michael W, AU - Farber,Daniel C, Y1 - 2020/06/07/ PY - 2020/03/24/received PY - 2020/05/06/revised PY - 2020/05/18/accepted PY - 2020/6/20/entrez KW - Biomechanics KW - Cadaver KW - Compression plating KW - Implant stiffness KW - Talonavicular arthrodesis JF - Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons JO - Foot Ankle Surg N2 - 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. SN - 1460-9584 UR - https://www.unboundmedicine.com/medline/citation/32553424/A_cadaveric_comparison_of_two_methods_for_isolated_talonavicular_arthrodesis:_Two-screws_versus_plate_with_integrated_compression_screw L2 - https://linkinghub.elsevier.com/retrieve/pii/S1268-7731(20)30101-6 DB - PRIME DP - Unbound Medicine ER -
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