Which of the following is not a typical component of orthosis material?

The choice of brick as an answer is correct because it is not a typical component of orthosis material. Orthoses are designed to be lightweight and functional, and materials used in their construction must provide support while also allowing for movement and comfort.

Plastics, like polypropylene or polyethylene, are common because they are moldable and can be easily shaped to contours of the body. Composites, which can combine various materials like carbon fiber, are utilized for their strength and lightness while still allowing for flexibility in design. Stainless steel, while not as commonly used in more modern orthotic devices, may still be utilized in certain structural components for reinforcements due to its durability and resistance to corrosion.

In contrast, brick is a heavy and rigid material that lacks the necessary flexibility and lightweight characteristics required for orthotic applications. Thus, it does not fit within the framework of what is suitable for creating orthoses, making it the correct answer to the question.