Saturday, July 5, 2014
Inverted Orthotic Technique: A ProLab Discussion
This is a good discussion by Dr Larry Huppin from ProLab Orthotics on lab techniques. A 10 Degree Inverted Orthotic would correct the everted heel 2 degrees whereas a poured 9 degree inverted cast (a favorite of my partner Dr William Olson) will correct 2-4 degrees assuming that the arch is not overly filled in with plaster. This does not work of course with forefoot varus feet where over 3-4 degrees of inversion jam up the first ray. When the cast is poured 9 inverted, using the standard Root Balance Technique, there must be at least 6 degrees of forefoot valgus, to avoid sagittal plane blockaid (first ray jamming).