Investigation of the physical function factor related to femoral prosthetic running ability

Abstract

The purpose of this study was to investigate the physical function factor related to femoral prosthetic running ability. Evaluation items were 20m running time as running ability, the Timed Up and Go test (TUG) as balance ability, prosthetic leg landing position time, and isometric muscle strength using a handheld dynamometer as muscular strength. For each evaluation, the comparison was made between the running group and the non-running group. For the items with significant difference, a receiver operating characteristic curve was drawn and a cut-off value was set, and its diagnostic performance was considered based on area under the curve (AUC), sensitivity, specificity, positive predictive value, negative predictive value, and correct diagnosis rate. As a result, in the running group and the non-running group, a significant difference was seen in the prosthetic side hip extension muscle strength. Furthermore, it was confirmed that the diagnostic ability of the cut-off value that separates the two groups is high, and that cut-off value was 0.14kgf/kg. In addition, by the evaluation with the combination of prosthetic side hip abductor muscle strength, it was possible to evaluate those that can run more limitedly.