Which material is typically used to create a rigid orthotic?

Acrylic is a commonly used material for creating rigid orthotics due to its excellent structural properties. It provides significant support and stability, which is essential for various foot conditions that require alignment and pressure distribution. The rigidity of acrylic allows for precise custom molding, ensuring that the orthotic conforms accurately to the unique shape of an individual's foot. This precision is critical in managing specific biomechanical issues, providing both comfort and effective corrective alignment.

While options such as EVA foam and Plastazote offer cushioning and shock-absorbing properties, they are generally more flexible and are typically used in softer, accommodative orthotics rather than rigid ones. Cork can be a supportive material but does not possess the same level of rigidity and customizability as acrylic. Therefore, for the purpose of creating a rigid orthotic, acrylic is the preferred choice due to its hardness, durability, and ability to withstand the forces applied to it during gait.