Materials Orthotics and Prosthetics

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Materials Orthotics and Prosthetics
Presenters Christopher Pellico Prachi Singh
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History of Materials Orthotics and Prosthetics

• First prosthetic Peg Leg
• First sophisticated prostheses
• Designed by Armorers of the Middle Ages
• Iron
• Heavy
• Strong
• Not flexible
• Current Materials
• Modern plastic
• Composites

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Manufacturing ProcessOrthotics and Prosthetics

• Measuring and Casting
• Prosthetist
• Evaluates the amputee and take an impression or
  digital reading of the residual limb
• Measures the lengths of relevant body segments
  and determines the location of bones and tendons
  in the remaining part of the limb
• Makes plaster cast of the residual body segment

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Manufacturing ProcessOrthotics and Prosthetics

• Making the Socket
• Thermoplastic heated and vacuum formed around
  mold
• Takes exact shape of the mold
• Prosthetist makes sure the socket fits perfectly
• Not a perfect fit Socket reheated, reformed,
  and retested

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Manufacturing ProcessOrthotics and Prosthetics
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Manufacturing ProcessOrthotics and Prosthetics

• Fabrication of the Prosthesis
• Pylon - Titanium and Aluminum die-cast
• Assembly done with torque wrench and screwdriver

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Prosthetic Naming Convention
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How does the prosthetic fit?

• Custom fitted socket
• Prosthetic socks (soft yet strong fabrics vs.
  wool) cushion the area in contact with the socket
  (polypropylene)
• Pylon materials
• Titanium
• Aluminum
• New Carbon Fibers
• Attaching to the body
• Knees cuffs and belts

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Orthotics and Prosthetics

• Ideal Prosthetic and Orthotic
• Easy for the patient to use
• Requires little or no repair
• Comfortable and easy to put on and take off
• Strong yet lightweight
• Future Materials
• Push for composites
• High cost