Prosthetic Options

As the founder, president and senior clinical director of Arm Dynamics, John has dedicated his career to positively transforming prosthetic rehabilitation for people with upper limb loss. He innovated a model of care that places each patient at the center of a multidisciplinary team of experienced upper limb prosthetists, occupational and physical therapists, technicians and insurance reimbursement specialists. The team provides holistic patient assessments, expedited prosthetic fitting and individualized prosthetic training, enabling patients to achieve dramatic and measurable improvements in comfort, wear time and functional ability. John&#;s advanced socket designs for all levels of upper limb loss have allowed Arm Dynamics to leverage emerging technologies to achieve optimal patient outcomes that were not possible with previous socket designs. His expertise in upper limb prosthetics and involvement in a range of international research projects led to the company&#;s appointment as a sole source provider of upper limb prosthetic services at Walter Reed National Military Medical Center, -.

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John is a Distinguished Fellow of the American Academy of Orthotists and Prosthetists (FAAOP-D) and received the AAOP Clinical Creativity Award in . He completed his undergraduate studies at the University of Southern California and received his prosthetics certificate from Northwestern University. He is engaged in a range of research and development initiatives with the Department of Defense, DARPA, FDA, Cleveland Clinic, and prosthetic component designers and manufacturers around the world. He is recognized internationally for his presentations and publications on innovative care techniques, interface designs, prosthetic care for military amputees, and novel outcome measure assessments for people with upper limb loss.

Designing prosthetic foot systems is challenging. It&#;s very difficult to reproduce the complex workings of the human foot and ankle. Ideally the foot will be light because its weight is added to the rest of the prosthetic leg. If the foot is too heavy and the suspension of the prosthesis is not appropriate, the connection to the socket and your limb will be affected and also the overall function of the prosthesis.

A good prosthetic foot should also be strong, as it will be taking on large forces and torque as you walk and run. Feet must also be small enough to fit within a foot shell, a cosmetic covering for the prosthetic foot, and thus fit within a shoe. Being light, strong and small whilst still remaining functional and durable is the challenge.

Early designs for prosthetic feet were often a solid piece of wood. A similar design, the SACH (solid-ankle-cushioned-heel) is still in use because of its sturdy function. It is especially useful for individuals with lower activity levels. A SACH foot typically has a rigid inner structure (wood or plastic) surrounded by a compressible foam cosmetic shell.

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Today&#;s more sophisticated feet add more functions and are secured inside a cosmetic shell. Most people never see their prosthetic foot without this exterior shell. The cosmetic shell stretches around the prosthetic foot and serves two purposes:

• It makes your prosthetic foot look like an anatomical foot.

• It fits snuggly in your shoe.

What&#;s inside the shell can vary dramatically. Prosthetic feet are designed to meet the needs of your lifestyle and activity level. Here are some factors to consider.

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