This document provides an overview of orthotics, including: 1. Definitions of key terms like orthosis, orthotist, and pedorthist. 2. A description of the pre-orthotic prescription examination process involving evaluating the patient and identifying functional goals and treatments. 3. Classifications of orthoses based on manufacture, materials used, and biomechanical terminology describing the joints affected and motion control provided. 4. A brief discussion of important mechanical properties to consider for orthotic materials.