The Value of OPIS

The utilization of Optimal Performance Index System (OPIS)–an independent laboratory testing facility and database founded by physical therapist Craig Norton–recommends proper athletic shoes, basic exercises, orthotics, and products through a evidence-based platform designed to help resolve those with common subacute lower extremity issues. Our approach centers on data-driven footwear selection, stability indexing, and insole translation analysis, so every recommendation is grounded in testing rather than trends. 

The Science Behind Our Recommendations

Our insights aren’t based on guesswork or subjective reviews. Every recommendation is built on a rigorous foundation of:

• Structural Parameters: Analyzing exact shoe metrics (like heel-to-toe drop, stability indices, and torsion control).

• Mathematical Modeling: Evaluating the differences between a variety of shoe parameters.

• Clinical Observations: Real-world testing and insights from active patient care.

• Injury Mechanism Knowledge: A deep understanding of how and why lower extremity injuries occur and how to mitigate them.

Why We Transitioned to a Subscription Model

To keep providing rigorous, data-driven insights that go beyond aesthetic footwear trends, OPIS has transitioned to a subscription platform. This model allows us to sustain our clinical research, mathematical modeling, and ongoing structural parameter testing—ensuring our community of practitioners and athletes continues to receive uncompromising, evidence-based guidance for lower extremity recovery.

The OPIS method for athletic shoe selection was approved by the American Journal of Orthopedics in March 2006.