The Effect of Insoles on Functional Performance in Pediatric Flexible Flatfoot

Flexible flatfoot is a condition that increase the load of the foot structure.With prolonged standing or walking, some children with flatfoot experience rapid discomfort or fatigue in the foot In this study, the investigators investigated the short-term effects of customized insoles on body functions and structures, and activities and participation in children with flexible flatfoot.

Flexible flatfoot is a condition that involves the collapse of the medial longitudinal arch of the foot during weight-bearing stress and the restoration of the arch after the removal of body weight. Flatfoot may increase the load of the foot structure, potentially interfering with normal foot function. With prolonged standing or walking, some children with flatfoot experience rapid discomfort or fatigue in the foot, pain in the plantar foot, and instability of the medial foot structure. Treatment effect of corrective shoes or insoles on flexible flatfoot in children remain uncertain. In this study, the investigators investigated the short-term effects of customized insoles on body functions and structures, and activities and participation in children with flexible flatfoot. The investigators hypothesized that the short-term use of customized insoles improves the scores for measures of body functions and structures and activities and participation. The investigators hypothesized that the short-term use of customized insoles improves the scores for measures of body functions and structures and activities and participation.

Half of the subjects are randomly assigned to assess balance capacity with arch insole first. Three day wash out, the subjects are assess balance capacity with sham insole.

Half of the subjects are randomly assigned to assess balance capacity with sham insole first. Three day wash out, the subjects are assess balance capacity with arch insole.

Pediatric Berg Balance Scale was developed to measure balance among older people with impairment in balance function by assessing the performance of functional tasks. Maximum score is 56 ,and minimum values is 0. Score 54-56 means a better outcome.

The center of pressure (CoP) measures derived from the foot pressure mat and force plate of RSSCAN system.

Inclusion Criteria: Children presenting symptomatic flexible flatfoot only Exclusion Criteria: Children with a history of foot injury or surgery, foot abnormalities or a confirmed diagnosis such as neurological deficits.