Research & Testimonials
Comparison of 3 Casting Methods for Custom Foot Orthoses: Immediate Effects on Shoe Comfort & In-shoe Plantar Pressure in Healthy Subjects with Pes Planus
Jinsup Song, Kersti Choe, Judy Tran, Howard Palamarchuk, James McGuire, and James Furmato
Temple University School of Podiatric Medicine, Philadelphia, PA, USA
The main objective of this study was to compare the performance of CFOs made from a traditional using Plaster of Paris (P), a digital registration using a 3-D laser scanner (Q), and a direct moulding technique (V). Using a Repeated Measures design, 24 healthy asymptomatic subjects (mean age and BMI) with pes planus evaluated each pair of CFOs using a standard shoe. Shoe comfort rating and dynamic in-shoe plantar pressure were measured (novel pedar-X, sampled at 100 Hz) during comfortable self-selected walking speed while wearing a standard shoe (New Balance, #574) only and with each of the 3 pairs of CFOs following 10-minutes of accommodation.
Evaluation of 3D laser scanner showed no significant difference to the traditional casting when used by an experienced clinician. A novel direct moulded CFO produced in weight bearing corrected position yielded improved comfort and dynamic in-shoe off-loading without customary wear in period. Results of the study suggest that even with mild correction of RCSP, participants with modest pes planus experienced improved comfort and dynamic off-loading, especially when wearing VFAS.
Introductory evaluation of a weightbearing neutral position casting device.
Craig Payne, then senior lecturer of Podiatry at La Trobe University in Melbourne, Australia, undertook a study to compare the Vertical-FAS to the non-weight bearing casting process. The research was completed and published in the Australasian Journal of Podiatric Medicine (Vol 35 No3 2001). It showed significantly more repeatability and far less variability with the Vertical-FAS in comparison to the non-weight bearing technique.
A further study was undertaken by Dr Payne and his team on the differences in control and comfort between non-weight bearing orthoses and Vertical-FAS orthoses. University students were cast using both methods and the same orthoses were made for all students. The findings showed 96% of participants preferred the Vertical-FAS orthotics for comfort and fit.
“Podiatry First has been using the Vertical-FAS since 2004 for all negative impression casts. We now have machines in our Bondi Junction, Miranda and Adelaide clinics, taking a combined average of 10-15 casts per week. We believe that this has greatly reduced the number of orthotic alterations required to get a satisfactory outcome for our patients.
All our Podiatrists have indicated that they could not go back to any other style of casting of custom made devices; such is the confidence in the machine. I believe that a RCT study on the Vertical FAS would back up my clinics belief.”Tom Baker, PODIATRY FIRST