Effects of Different Types of Ankle Orthoses on the Dynamic Balance Ability in Individuals with Functional Ankle Instability
Jiao Lu;Zhang Qiuxia;School of Physical Education,Soochow University;
Objective To explore the effect of soft and semi-rigid ankle orthoses on the dynamicbalance ability in patients with functional ankle instability(FAI). Methods Thirteen patients with uni-lateral functional ankle instability were selected as objects of the study. The reaching distance of theaffected and healthy legs when wearing no orthoses,as well as wearing soft and semi-rigid ankle ortho-ses was measured in the three directions of the Y balance test. The distance,normalized to leg length,was used for the further analysis. Two-factor repetitive measurement analysis of variance(ANOVA)was used to compare the dynamic balance ability of legs when wearing different orthoses. Results The normalized reaching distance of the healthy legs decreased gradually from wearing no orthoses,towearing soft and semi-rigid orthoses(P0.05). Differences were significant in the reaching distance inthe posterolateral direction of the affected legs when wearing nothing and soft orthoses(P0.05),butthere were no significant differences between wearing semi-rigid orthoses and nothing(P0.05). Conclusions Wearing soft orthoses can increase the reaching distance of the affected legs of FAI patients inthe posterolateral direction of the Y balance test,indicating the improvement of the dynamic balanceability of the affected legs. Wearing semi-rigid orthoses has no effect on the dynamic balance abilityfor the legs with FAI. However,it has an adverse effect on dynamic balance ability for healthy limb ofFAI patients wearing soft or semi-rigid ankle orthoses.
【CateGory Index】： G804.64