PMID: 11310867Apr 20, 2001Paper

The effects of adult acquired flatfoot deformity on tibiotalar joint contact characteristics

Foot & Ankle International
M A FriedmanM E Brage

Abstract

Changes in the tibiotalar contact characteristics were investigated using eight fresh frozen cadaver ankle specimens to further develop an established model of the acquired flatfoot deformity. The deformity was simulated by sectioning the tendons and ligaments of the ankle and foot that normally support the longitudinal arch. Axial loads of 1,350 N were applied to the foot in a neutral position in both the intact specimen and flatfoot model. The flatfoot condition resulted in significant lateral shifts of 5.28 mm in global contact area and 11.26 mm in the location of peak pressure, and in a small but significant posterior shift of 1.14 mm in global contact area. The flatfoot condition also resulted in a significant, 35%, reduction in contact area. Significant increases in mean pressure, 14%, and peak pressure, 13%, were also found, but were not in proportion to the relatively large decrease in contact area. This suggests a transfer of load off of the talar dome. Increased loading of the lateral facet and fibula are suspected. The lateral shift in the contact region created a local increase in mean contact pressure that may be responsible for long term degenerative changes in patients with this deformity.

References

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Citations

Dec 7, 2007·The Journal of Bone and Joint Surgery. British Volume·F KrauseM Weber
Jul 8, 2011·Foot & Ankle International·Markus KnuppBeat Hintermann
Feb 2, 2017·Foot & Ankle International·Sara Lyn Miniaci-CoxheadA Samuel Flemister
Oct 3, 2018·Case Reports in Orthopedics·Takumi MatsumotoTakuo Juji
Jun 11, 2019·Current Orthopaedic Practice·Jonathan R M KaplanJean Jose
Mar 3, 2020·Frontiers in Pediatrics·Philip J Bresnahan, Mario A Juanto
Aug 24, 2010·AJR. American Journal of Roentgenology·Andrea Donovan, Zehava Sadka Rosenberg
Aug 22, 2009·AJR. American Journal of Roentgenology·Andrea Donovan, Zehava Sadka Rosenberg
Sep 20, 2012·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Koen PeetersIlse Jonkers
Nov 29, 2005·Foot & Ankle International·Pedro R Gutiérrez, Manuel Herrera Lara
Jun 17, 2009·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Andrew J BlackmanWilliam R Ledoux
Jul 7, 2015·Journal of Foot and Ankle Research·Kan ImaiToshikazu Kubo
Nov 6, 2015·Medicine and Science in Sports and Exercise·Christopher BishopThomas May
Mar 5, 2003·Clinics in Podiatric Medicine and Surgery·Graham A Hamilton, Lawrence A Ford
Oct 17, 2003·Foot and Ankle Clinics·David F Sitler, S Josh Bell
Aug 25, 2009·Clinical Biomechanics·Takaaki HiranoKenton R Kaufman

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