TY - GEN
T1 - Design of an articulating non-invasive joint distractor for metacarpophalangeal joint of the thumb
AU - Farjam, Pardis
AU - Roubos, T.J.
AU - Rouwkema, J.
AU - Hekman, E.E.G.
AU - Verkerke, G.J.
N1 - Funding Information:
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 863183.The authors would like to thank Prof. dr. Paul Werker, head of the department of Plastic Surgery in the University Medical Center Groningen, for performing the surgical procedures.
Funding Information:
This project has received funding from the European Union s Horizon 2020 research and innovation programme under grant agreement No 863183.
Publisher Copyright:
© 2023 by ASME.
PY - 2023/6/4
Y1 - 2023/6/4
N2 - 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.
AB - 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.
U2 - 10.1115/DMD2023-4967
DO - 10.1115/DMD2023-4967
M3 - Conference contribution
SN - 978-0-7918-8673-1
T3 - Frontiers in Biomedical Devices (BIOMED)
BT - Proceedings of the 2023 Design of Medical Devices Conference
PB - ASME Digital Collection
T2 - Design of Medical Devices Conference, DMD 2023
Y2 - 17 April 2023 through 19 April 2023
ER -