Apparatus and method for measuring mobility of the scaphoid
AssigneeYale University
InventorsScott W. Wolfe, Joseph J. Crisco
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Abstract
An apparatus and method for measuring mobility of a subject's scaphoid. The apparatus includes a force applicator that applies a variable force to the scaphoid, a load cell that generates a first signal corresponding to the magnitude of the force, and a displacement sensor that generates a second signal corresponding to a displacement of the scaphoid in response to the applied variable force.
Claims21
Apparatus for measuring mobility of a free-floating bone in a subject's wrist, said apparatus comprising:
- a support structure designed to support the subject's hand and to permit unobstructed movement of the free-floating bone when supporting the subject's hand,
- a force applicator positioned over and applying a variable force to said free-floating bone while the subject's hand is being supported by the support structure,
- a load cell generating a first signal corresponding to the magnitude of said variable force, and
- a displacement sensor generating a second signal corresponding to a displacement of said free-floating bone in response to said variable force.
The apparatus of claim 11 wherein said display device comprises a video screen.
Method for measuring mobility of a free-floating bone in a subject's wrist, said method comprising the steps of:
- applying a variable force to said free-floating bone,
- measuring said variable force,
- measuring displacements of said free-floating bone in response to said force, and
- displaying the displacement of said free-floating bone versus the measured variable force.
Dependencies are inferred from the claim text.