Comparison of Isometric Ankle Strength Between Females With and Without Patellofemoral Pain Syndrome.

Authors: Carvalho-e-Silva A, Magalhaes E, Bryk F, Fukuda T

Proximal and distal influences on the knee may be related as etiological factors of patellofemoral pain syndrome (PFPS). The distal factors include subtalar excessive pronation as well as medial tibial rotation, but no study has investigated whether ankle weakness could lead to alterations that influence the patellofemoral joint. Therefore, the purpose of this study was to compare the isometric strength of the ankle dorsiflexors and invertors, with a measure of rear foot eversion and the result of the Navicular Drop Test (NDT) in females with PFPS to a control group of females without PFPS.  The authors founds that the isometric strength of the dorsiflexor and invertor muscle groups in females with PFPS was not statistically different (p>0.05) than that of the control group. Additionally, there was no statistically significant difference between groups for either rear-foot eversion and NDT measures (p>0.05).

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