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Do foot orthoses change lower limb muscle activity in flat-arched feet towards a pattern observed in normal-arched feet?

George S. Murley, Karl B. Landorf, Hylton B. Menz (2010), Department of Podiatry, Faculty of Health Sciences, La Trobe University, Australia Musculoskeletal Research Centre

Modified Formthotics influence lower limb muscle activity in flat arched feet.

In this study, participants underwent rigorous protocol for classifying foot posture and were screened for their suitability (flat-footedness) for the study. They were then given both rearfoot medial wedge modified Formthotics and casted prescription orthoses with a 20 degree cast correction. EMG lower limb muscle amplitude data was gathered with the results showing a change in both tibialis posterior and peroneus longus amplitude with the modified Formthotics. Further research is needed to determine whether these changes affect clinical outcomes.

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