The Dynamic Stabilizing Innersole System (DSIS): the management of hyperpronation in children

Area of Science:

• Orthopedics
• Pediatric Podiatry
• Biomechanics

Background:

• Pediatric flatfoot deformities are common and can impact gait and foot health.
• Traditional corrective devices may have limitations in efficacy and patient compliance.
• The Dynamic Stabilizing Innersole System (DSIS) has emerged as a potential alternative for managing pediatric flatfoot.

Purpose of the Study:

• To evaluate the effectiveness of the DSIS in correcting the resting calcaneal stance position (RCSP) in children.
• To compare the RCSP with and without the DSIS to assess its corrective impact.
• To determine if the DSIS is sensitive to the severity of flatfoot deformities.

Main Methods:

• A study involving 50 children with flatfoot deformities.
• Measurement of the resting calcaneal stance position (RCSP) with and without the DSIS.
• Statistical analysis, including comparison of means and linear regression, to assess significance and sensitivity.

Main Results:

• The DSIS significantly decreased the mean RCSP by an average of 6 degrees.
• No statistically significant difference was found between the neutral calcaneal stance position and the RCSP with DSIS, indicating correction of severe deformities.
• The DSIS demonstrated a significant difference compared to no device, showing considerable correction.
• Linear regression indicated the DSIS is sensitive to deformity severity, preventing overcorrection in milder cases.

Conclusions:

• The DSIS is effective in correcting pediatric flatfoot deformities, returning the foot to a neutral calcaneal stance position.
• The DSIS provides a significant and considerable correction for the RCSP.
• The DSIS offers a promising, sensitive alternative to traditional pediatric corrective devices, adaptable to varying deformity severities.