Awesome job Josh and coworkers!!!!
I will immediately add your extremely valuable research to my lecture titled "Foot Orthoses:
Theory and Research Evidence for Their Biomechanical Effects".
Congratulations on your continuing work to improve the research evidence supporting the use of custom foot orthoses for certain pathological conditions of the foot and lower extremity.
Mark,
The full details of the rationale and materials used to fabricate the orthotic device are in the paper. In brief:
* Neutral suspension plater cast
* 20% medial soft-tissue arch expansion
* 3mm polypropylene shell (CADCAM produced)
* F/ft width - lateral border of foot to bisection of 1st MPJ
* Length at distal edge was proximal to MPJ's
* Lateral half-only extrinsic heel post
* 12mm heel cup height
* Full length 3mm Poron top cover
* 6mm lateral heel expansion (mainly due to the thickness of the poron)
Mark
eva 350. Thats a pretty hard device for for a rigid cavus foot isn't it?
I would have thought that a 350 eva device would have even less 'give'(for want of a better word) than say a 4mm polypropylene device. I find that eva 270 with extra lateral arch support works really well. Amfit devices seem to capture the cavus foot effectively.
Dear bfox@atp-usa.com,
From my orginal paper "For the control group, casts were made of both feet using the same technique as for the treatment group. However, they were not used to fabricate the intervention. Instead the control group were given ‘sham’ insoles made simply from flat, non supportive 3-mm latex foam, a material shown to be the least effective at reducing pressure".
Topcover was Kashmeer® and bottom cover was Agotex®.
Joshua,
Have you done any studies using what have become known as "Pre-Engineered" Orthotics?
These are not your typical"Dr Scholls"over the counter, 3-dimensional insoles.
These are well designed, accomodative insoles with both arch and metatarsal support molded in.
These are currently being used
by footcare providers as a first step intervention before going to a true custom orthotic.
Would appreciate your comments.
Bob
Hello Bob,
Not exactly sure what you mean by "Pre-Engineered" Orthotics, but if you are referring to the type you sell (http://www.prothotics.com/contact.htm), no I have not performed any studies on this type.
Kind regards
Joshua
Congratulations on a job well done.
You and your colleagues should be proud of the exciting and ground breaking research of yours that has recently been published on the cavus foot.
Your work deeply satisfies me and gives me renewed hope for the continued excellence of podiatric research in both the near and distant future.
Your clinically relevant research should also serve as an inspiration to all podiatric researchers around this small world of ours. Please continue with your most valuable research.
Podiatrist & NHMRC Australian Clinical Research Fellow
Institute for Neuromuscular Research, The Children's Hospital at Westmead
Discipline of Paediatrics and Child Health, Faculty of Medicine, The University of Sydney, Australia
Email: joshuab2@chw.edu.au
Acute effect of orthoses on foot orientation and perceived comfort in individuals with pes cavus during standing
Mansour Eslami, Clarice Tanak, Sébastien Hinse, Mehrdad Anbarian and Paul Allard The Foot Volume 19, Issue 1, March 2009, Pages 1-6
Dynamic plantar loading index: Understanding the benefit of custom foot orthoses for painful pes cavus
Bijan Najafi, Elizabeth Barnica, James S. Wrobel, Joshua Burns Journal of Biomechanics; Available online 17 April 2012
Comparison of plantar pressures and contact area between normal and cavus foot
Fernández-Seguín Lourdes Ma, Diaz Mancha Juan Antonioa, Sánchez Rodríguez Raquela,
Escamilla Martínez Elenaa,
Gómez Martín Beatriza, Ramos Ortega Javier Gait & Posture; Available online 28 October 2013
I have used a neutral cast with a 5mm layer of 270 density eva for the top
and then under fill using red slow return poron.....really absorbing and enhances stopping distance and stopping time on landing....great for fused ankles, stj.'s enhances loss of motion and poor shock absorption scenarios. no research but great clinical results. Only last about 1 to 2 yrs but quick and cheap to make another pr off existing mold.
Biomechanical effects of foot orthoses with and without a lateral bar in individuals with cavus feet during comfortable and fast walking
Gabriel Moisan ,Martin Descarreaux,Vincent Cantin March 17, 2021