Nice work. Interesting that the 20 degree inversion of the custom devices did not increase peroneal activity more than the prefabricated devices..... On the surface, you might think that the prefab seems to out-perform the inverted custom all round. Except if that increase in peroneal activity in association with the prefab is too much and pushes the peroneus longus beyond the zone of optimal stress- resulting in overuse injury such as peroneal tendonitis; or of course, if the patient has peroneal tendonitis in the first place, could be a big ouch! Look forward to reading the full paper. Would be nice to see the differences in stiffness of the devices.
Great work. I have always assumed that the inverted orthotic device, if working correctly and not over-supinating the foot, would decrease the peroneus brevis function slightly, and increase the peroneus longus function allowing for better first ray plantarflexion. Is this what you found? Thanks Rich Blake
Effects of foot orthoses on the temporal pattern of muscular activity during walking
Philippe Dedieu,
Charlène Drigeard, Leila Gjini, Fabien Dal Maso, Pier-Giorgio Zanone Clinical Biomechanics; 19 July 2013
Electromyographic patterns of tibialis posterior and related muscles when walking at different speeds
George S. Murley, Hylton B. Menz, Karl B. Landorf Gait & Posture; Article in Press
The Effect of Orthotics on Intersegmental Foot Kinematics and the EMG Activity of Select Lower Leg Muscles
Juan C. Garbalosa, Bruce Elliott, Richard Feinn, Ryan Wedge The Foot; Article in Press
Comparison of Leg Muscle Activity During Level and Uphill Walking in Individuals with Flat Foot and Normal Foot: A Cross-Sectional Study
Junaid Waheed et al Source