Getting the Perfect Fit: Custom Liners and Custom 4U scanning

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Experts OnDemand Series

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Experts OnDemand: Getting the Perfect Fit: Custom Liners and Custom 4U scanning

This course is part of our Experts OnDemand series.


Prosthetists regularly treat patients with residual limbs that require deeper intervention than an off-the-shelf liner. Adherent scar tissue, atypical shapes, and sensitive skin are all indications that the patient may need a custom liner. This presentation will discuss the materials available for custom liners, patient indications, casting methods, and scanning methods for shape capture.


After successfully completing this training, attendees will be able to:

  • State two differences between urethane and silicone liners
  • Describe the casting process for an Ottobock custom liner
  • Explain why a patient might benefit from a custom liner, given specific patient details in a case scenario.


Chris Doerger, PT, CP

Chris is a certified prosthetist and physical therapist. She attended the University of Miami where she received her master’s degree in PT. Following a few years of clinical practice, she returned to school at Northwestern University where she completed her certificate in prosthetics. Chris is an ABC certified prosthetist and licensed in the state of Florida. Her areas of interest include biomechanics, gait training, and CAD CAM technology. In addition to her duties at Ottobock, she teaches in the physical therapy program at the University of Central Florida, serves as a track and field classifier for U.S. Paralympics, and volunteers with the ABC Prosthetics Exam Committee.

David T. Hughes, CPO

David is an ABC certified prosthetist and orthotist. He graduated from California State University at Dominguez Hills in 2001 where he acquired a Bachelor’s degree in Health Science, majoring in prosthetics and orthotics. After graduating he completed residencies in both disciplines at the Veteran Affairs Hospital in Loma Linda, CA and then transitioned into private practice. David has a great interest and experience in product education, support and development. He has presented throughout the United States as well as in Asia. Working within the O and P field has provided him with opportunities to supply prostheses for people without sufficient services in Central and South America. He is passionate about helping patients to regain their independence and reach their maximum potential of mobility.


  • TBD
  • ABC will grant Category I CEUs to Certified Prosthetist, Prosthetic Assistants, and Prosthetic Technicians. Category II CEUs will be granted to those not identified.


If you have any questions, please contact the Ottobock Education Team at or call 800-328-4058.

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