I have 33 years of experience and specialize in the field of orthotics and prosthetics, with specific knowledge of lower extremity orthotics, lower extremity prosthetics and spinal orthotics. I have published on such topics as polio stabilization in the lower extremities, shoulder immobilization for the infant and partial foot prosthetics. I have testified 10 times on topics such as proper fabrication of knee-ankle-foot orthotics (KAFO), conventional spinal orthotics and lower extremity prosthetics.