Introduction to Shape Memory Material: Biomedical, Prosthetic and Orthotic Application

The need for prosthetic and orthotic devices is increasing significantly all over the world. Due to the increasing incidenceof sports injuries and road accidents, the rising number of diabetes-related amputations, and the growing prevalence ofosteosarcoma around the world are poised to drive the global market. Sports-induced injury is anticipated to drive demand,aiding market growth during the forecast period. The global prosthetics and orthotics market was valued at USD 6.39 billionin 2021 and is expected to expand at a compound annual growth rate (CAGR) of 4.3% from 2022 to 2030. Materials likepolymers (Polypropylene, Silicon, etc.), metals (Aluminium, Iron, etc.), alloys (stainless steel, bronze etc.), and carbon fibersare now used for making prosthetic and orthotic devices. Shape memory polymers (SMP) and shape memory alloys (SMA) arehaving ability to change and regain their original shape after changes in external stimuli like temperature, PH, heat, etc. Thisreview has discussed shape memory materials’ mechanical, chemical, and general properties, including their classification,advantages, disadvantages, FDA regulations, and applications in prosthetics and orthotics. This review will help prosthetists,orthotist, and biomedical engineers better understand these materials and how they increase the medical devices’ quality,durability and functionality.