MASS - Maximal Arch Supination Stabilization

Why MASS Delivers Results

MASS (Maximum Arch Supination Stabilization) is a key reason our patients experience measurable outcomes. This technique is engineered to position each foot in the maximum attainable supination - as much as can be comfortably achieved - while maintaining both the heel and forefoot in a plantar-grade (flush-to-floor) position.

Supination Tailored to the Individual

The degree of supination is not arbitrary; it’s determined by the relative flexibility of the foot, which reflects its ligamentous laxity. This ensures that each impression is personalized to the patient’s unique structural capacity.

The Floor as a Functional Reference

The floor serves as a critical reference plane, ensuring consistent, repeatable results. Unlike some lab protocols where patients simply step in and out of a foam box - capturing the very collapsed elements of foot posture we aim to correct - our method avoids this pitfall entirely.

A Functional, Stance-Phase Impression

Instead, the foot is systematically introduced into the foam, following the same loading sequence as the normal stance phase of gait. This respects the natural biomechanics we seek to support, rather than relying on arbitrary or static positioning.

Preserving Optimal Arch Integrity

During the impression process, the foam provides positive upward resistance, preserving the optimal arch structure created by the stance-phase sequence. This dynamic interaction ensures a more functional and supportive orthotic outcome.

No Forefoot Deviations

Because each part of the foot is guided to floor level, the final cast is free of forefoot varus or valgus deviations—a common issue in less precise casting methods.

Efficient, Reliable, and Superior to Plaster

This casting technique is not only faster and easier than traditional plaster methods, but also more consistent and biomechanically accurate, making it ideal for both clinical efficiency and patient outcomes.