Summary of progress /findings (approx 300 words)
Specimens have now been testing using our novel physiological hand and wrist simulator and independent motion of the wrist and metacarpophalangeal joints (combined) has been demonstrated by controlling tension in nine tendons simultaneously. Operation of the simulator has been clearly established based on desired joint motions, as quantified using optical motion capture, or grip force, as quantified by an instrumented ball. The desired motions – flexion-extension, radial-ulnar deviation, and the dart throwing motion – have been achieved, as has circumduction and tenodesis grip.
Two manuscripts addressing the control of the simulator and tests of intact specimens have been prepared for publication and should be submitted within the upcoming month. It is anticipated that a further manuscript, examining tenodesis grip, will be prepared. There is also the potential for a fourth manuscript, addressing the role of flexor tendon pulleys; however, the data for this are still being interrogated.
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What is the relevance/value of this research to hand surgery?
This is the first physiological simulator with the ability to recreate motions of the hand and wrist. Following the completion of the validation of this device, as will be done with this funding, this opens the door to a plethora of opportunities to help surgeons assess existing and novel treatment approaches in a controlled, repeatable environment.
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