Orthotics (also known as orthotic insoles, shoe inserts, or orthoses) are devices placed inside the shoes with the purpose of restoring our natural foot function. This is necessary when the natural biomechanical balance of our lower body has been disrupted by over-pronation.
Orthotics is a medical specialty that focuses on the design and application of orthoses. An orthosis is "an externally applied device used to modify the structural and functional characteristics of the neuromuscular and skeletal system".