Planar dominance. A major determinant in flatfoot stabilization.

Area of Science:

• Orthopedic surgery
• Biomechanics
• Podiatry

Background:

• Symptomatic pediatric flatfoot and adult acquired flatfoot from posterior tibial dysfunction require effective treatment strategies.
• Understanding foot and leg biomechanics is fundamental for successful surgical outcomes.

Purpose of the Study:

• To emphasize the importance of biomechanical evaluation in treating pediatric and adult flatfoot.
• To guide the selection of appropriate surgical procedures based on deformity assessment.

Main Methods:

• Evaluation of supramalleolar deformity.
• Assessment of subtalar and midtarsal joint function.
• Analysis of posterior tibial tendon and medial ligamentous structures.
• Evaluation of triceps suri deforming forces.

Main Results:

• Supramalleolar deformity directly influences procedure choice and success.
• Individualized correction of subtalar and midtarsal joints is necessary.
• Augmentation is required for overall instability, such as with tendon or ligament issues.
• Triceps suri evaluation is key for predictable outcomes.

Conclusions:

• Comprehensive biomechanical assessment is essential for successful surgical correction of flatfoot deformities.
• Tailored treatment plans addressing specific joint functions and deforming forces yield optimal results.