الفهرس 
Effect Of Foot Insole and Biodex Balance Training On Balance And Risk Of Fall In Adult Subjects With Flexible Flat Foot
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Abstract
Background: Flat foot (FF) or pes planus is a complex disorder with a diversity of symptoms and varying degrees of deformity that is caused by structural loading changes along the medial aspect of the feet and plantar arches, when the arch starts collapsing, balance is disturbed at the feet, and therefore the balance throughout the entire body is also disturbed. Purpose: to investigate the effect of foot insole and biodex balance training on dynamic balance, risk of fall, and functional ankle instability in flexible flat foot. Method: Sixty subjects of both sex with bilateral flexible flat foot participated in this study, their age was ranging between 18-21 years and BMI was between 18-25 kg/m².They were selected and assigned randomly into two equal groups: group (A): Thirty subjects received biodex balance training 3 sessions per week for 4 Weeks and short foot exercise 3 min each day for 4 weeks, each repetition was held for 5 sec and repeated for up to 3 min approximately 30 repetitions, 45-second rest period after each 10-repetition. group (B): 30 subjects wore foot insole for 6-8h per day and received the same program as group A. Overall stability index “OSI”, anteroposterior stability index “APSI”, and mediolateral stability index “MLSI” were measured pre-and post-treatment by Biodex Balance System at level 4, Cumberland Ankle Instability Tool was used to measure functional ankle instability “FAI”. Results: There was a statistically significant difference in post-treatment with mean values of Overall stability index OSI (P=0.020), MLSI mediolateral stability index (P=0.012), anteroposterior stability index APSI (P=0.020), and functional ankle instability FAI (P=0.001) between the two groups in favor of group B. Conclusion: Foot insole combined with biodex balance training and short foot exercise are effective methods to improve dynamic balance impairment, decrease the risk of fall and improve functional ankle instability in flexible flat foot.