Design of an articulating non-invasive joint distractor for metacarpophalangeal joint of the thumb

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Abstract

There is no specific distraction device available for the metacarpophalangeal joint (MCPJ) of the thumb. Joint distraction is required to facilitate the implantation of MCPJ spacers. In addition, expanding the joint space is essential for MCPJ arthroscopy. For these reasons, a novel device has been designed to create some space in the MCPJ. This articulating joint distractor uses a finger trap to apply the distraction force to the thumb and a strap to fixate the hand. There is the possibility to flex the thumb while maintaining the distraction force. In a first cadaveric experiment, we have determined that the force required to create 2 mm of distraction is approximately 30N. A prototype of the articulating joint distractor has been built and was tested during a second cadaveric study. As a result of the second cadaveric experiment, the desired functions of the prototype have been validated. By adjusting and optimizing the design to minimize the risks found partly during the experiment, the final design of the non-invasive MCPJ distractor has been realized.
Original languageEnglish
Title of host publicationProceedings of the 2023 Design of Medical Devices Conference
PublisherASME Digital Collection
Number of pages6
ISBN (Electronic)9780791886731
ISBN (Print)978-0-7918-8673-1
DOIs
Publication statusPublished - 4 Jun 2023
EventDesign of Medical Devices Conference, DMD 2023 - Minneapolis, United States
Duration: 17 Apr 202319 Apr 2023

Publication series

NameFrontiers in Biomedical Devices (BIOMED)

Conference

ConferenceDesign of Medical Devices Conference, DMD 2023
Abbreviated titleDMD 2023
Country/TerritoryUnited States
CityMinneapolis
Period17/04/2319/04/23

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