Development of novel 3D-printed robotic prosthetic for transradial amputees

Kendall F. Gretsch, Henry D. Lather, Kranti V. Peddada, Corey R. Deeken, Lindley B. Wall, Charles A. Goldfarb

Research output: Contribution to journalArticlepeer-review

86 Scopus citations


Background and aim: Upper extremity myoelectric prostheses are expensive. The Robohand demonstrated that threedimensional printing reduces the cost of a prosthetic extremity. The goal of this project was to develop a novel, inexpensive three-dimensional printed prosthesis to address limitations of the Robohand. Technique: The prosthesis was designed for patients with transradial limb amputation. It is shoulder-controlled and externally powered with an anthropomorphic terminal device. The user can open and close all five fingers, and move the thumb independently. The estimated cost is US300. Discussion: After testing on a patient with a traumatic transradial amputation, several advantages were noted. The independent thumb movement facilitated object grasp, the device weighed less than most externally powered prostheses, and the size was easily scalable. Limitations of the new prosthetic include low grip strength and decreased durability compared to passive prosthetics.

Original languageEnglish
Pages (from-to)400-403
Number of pages4
JournalProsthetics and Orthotics International
Issue number3
StatePublished - Jun 2016


  • Congenital
  • Limb differences
  • Prosthesis
  • Prosthetic arm
  • Three-dimensional printing
  • Transradial amputation


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