Modeling for Military Operational Medicine Scientific and Technical Objectives (Improving Accuracy of the F-Scan Sensor)
JAYCOR SAN DIEGO CA
Pagination or Media Count:
Recent advances in biomechanics have the potential to assist in the reduction of overuse injuries in the military. The three major components for this effort are 1 a predictive overuse injury model, 2 a portable sensor to measure the primary input of the model-ground reaction forces, and 3 analysis of data from personnel undergoing military field exercises. This work evaluates the F-scan system as a potential sensor, specifically, its inability to accurately measure ground reaction forces. Modifications to make the F-scan system portable have been documented in another report Sih 2001. The F-scan system Tekscan, Inc., Boston, MA is a small in-shoe sensor that measures plantar pressure distribution using a thin disposable sheet composed of an array of pressure sensing elements or sensels. Previous studies have found that while the F-scan system is capa ble of accurately recording relative pressures, errors up to 62 in total load are possible Luo et al. 1998 Sumiya et al. 1998. For example, using data from a military boot study Harman et al., unacceptable errors in the F-scan system were found when compared to a force platform 37129 error at 3 selected points during the walking cycle.
- Medicine and Medical Research
- Military Operations, Strategy and Tactics