The Effect of Musculoskeletal Abnormalities of Pes Planus, Pes Cavus and Hallux Valgus on Postural Sways during Quiet Stance

Recent efforts have been made to specify the proprioceptive quantity using the results of subordinate measurements including measuring postural stability and sway. As the structure of the human foot is a factor affecting motor performance، the aim of this study was to investigate the effect of musculoskeletal abnormalities of pes planus، pes cavus and hallux valgus on postural sways during quiet stance. 48 female students (mean age of 24. 11±2. 64 yr، height 158. 53±5. 92 cm and weight 55. 79±7. 94 kg) took part in this study. The area and velocity of postural sways were measured using FDM-S Foot pressing force device. One-way ANOVA was used for statistical analysis at significance level of 0. 05. Statistical results showed a significant difference between pes cavus and normal foot (control) groups، between hallux valgus and normal foot (control) groups، between pes cavus and pes planus groups and between hallux valgus and pes planus groups (P<0. 05). The findings showed no significant differences between pes planus and normal foot (P>0. 05). The results of this study showed that the various foot structures influence postural sway factors. Classification of foot types and rate of deformity in both clinical and research areas is very important and should receive attention. Also، sport coaches and clinical experts should be aware of these findings in order to design and apply sport and rehabilitation programs.