Wrist joint motion simulator.
A computer controlled wrist joint motion simulator has been developed that actively moves forearms from cadavers through cyclic planar flexion-extension motions, planar radial-ulnar deviation motions, and combined motions such as circumduction. Hybrid position-force feedback control algorithms are used to determine the wrist flexor and extensor tendon forces necessary to achieve the desired motions. The simulator was used in a series of 12 fresh cadaver forearms to produce both flexion-extension and radial-ulnar deviation motions and was found to cause repeatable, physiological movements. In these experiments, the extensor tendon forces were greater than those of the flexors, typically by a factor of two.
Werner
F W
FW
Department of Orthopedic Surgery, State University of New York Health Science Center, Syracuse 13210, USA.
Palmer
A K
AK
Somerset
J H
JH
Tong
J J
JJ
Gillison
D B
DB
Fortino
M D
MD
Short
W H
WH
D001696:Biomechanical Phenomena; D002102:Cadaver; D003198:Computer Simulation; D006801:Humans; D009068:Movement / Q000502:physiology*; D014953:Wrist / Q000502:physiology*