Plantar impact causing midfoot fractures result in higher forces in Chopart's joint than in the ankle joint

Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
M RichterChristian Krettek

Abstract

Force effect (impact, extent of foot compartment deformation) and result (fracture pattern) for midfoot fractures in car occupants is known. An analysis of the processes in the foot was intended to improve car safety. Eleven fresh, unfrozen, unpreserved intact human cadavers (age: 36.8 (16-61) years, gender: male, race: Caucasian) were studied 24-72 h after death. In 3 cadavers (5 feet) the experimental design was established: entire cadaver fixed on a special tray in supine position, pendulum with bar impactor hitting the foot plantar to Lisfranc's joint. A custom-made pressure sensor was inserted in the ankle (A), talonavicular (TN) and calcaneocuboid (CC) joints (resolution: 1 cm2, sampling rate: 500/s). Sixteen feet were measured: midfoot fractures were induced in 11 feet. The maximum pressure amounted to 1.22-2.55 MPa (2.04+/-0.412) at 0.005 0.195 s (0.067+/-0.059) after impact. The maximum pressure occurred in 8 (50%) cases in the ankle, in 7 (44%) of the TN and 1 (6%) of the CC joints. A comparison of the first 200 pressure samples after impact of all sensor fields resulted in higher forces in Chopart's joint than in the ankle (t-test: p < 0.001). These force differences were higher in cases with midfoot fractures (mixed...Continue Reading

References

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Citations

May 24, 2011·Der Unfallchirurg·M Richter
Apr 3, 2007·International Journal of Legal Medicine·J FalkM A Rothschild
Jul 30, 2014·Archives of Orthopaedic and Trauma Surgery·C KöstersS Ochman
Feb 1, 2014·Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons·Martinus RichterSabine Ochman
Feb 11, 2011·Der Chirurg; Zeitschrift für alle Gebiete der operativen Medizen·T Mittlmeier, M Beck
Jun 9, 2009·Foot and Ankle Clinics·Matthew DeOrioMark Easley
Oct 24, 2006·Foot & Ankle International·Martinus RichterChristian Krettek
Feb 9, 2017·Foot and Ankle Clinics·Stefan Rammelt, Tim Schepers
May 23, 2012·The Journal of International Medical Research·Y ChengH Zhang
Oct 23, 2010·Foot & Ankle International·Tim SchepersEsther M M Van Lieshout
Jan 5, 2008·Foot & Ankle International·Martinus RichterThomas Gosling
Sep 1, 2006·The Journal of Bone and Joint Surgery. British Volume·M RichterC Krettek
Jul 1, 2008·The American Journal of Orthopedics·Siraj A SayeedHarold B Kitaoka
Mar 14, 2019·Scandinavian Journal of Caring Sciences·Valentina BressanAlvisa Palese
Mar 25, 2011·Clinical Anatomy : Official Journal of the American Association of Clinical Anatomists & the British Association of Clinical Anatomists·James R Funk
Apr 15, 2005·Foot & Ankle International·Martinus RichterChristian Krettek

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