This area is comprised of two related parts: biomechanics and rehabilitation engineering.
Biomechanics applies both fluid mechanics and transport phenomena to biological and medical issues. It includes the study of motion, material deformation, flow within the body, as well as devices, and transport phenomena in the body, such as transport of chemical constituents across biological and synthetic media and membranes.
Efforts in biomechanics have developed the artificial heart, replacement heart valves and the hip replacement.
Rehabilitation engineering uses concepts in biomechanics and other areas to develop devices to enhance the capabilities and improve the quality of life for individuals with physical and cogitative impairments. They are involved in prosthetics, the development of the home and/or workplace, and transportation modifications.