Apparatus and method for determining load-displacement and flexi

Details Apparatus and method for determining load-displacement and flexi Apparatus and method for determining load-displacement and flexi

1991-08-01

1993-07-20

Hindenburg, Max

Surgery

Truss

Pad

128779, A61B 5103

Patent

active

052284549

ABSTRACT:
An apparatus which determines the load-displacement and flexibility characteristics of an anatomical joint. The apparatus includes a first frame for receiving a first body portion and a second frame for receiving a second body portion which is pivotable with respect to the first body portion. A pivot assembly is interconnected between the first frame and the second frame such that the second frame is pivotable with respect to the first frame about first and second frame pivot axes. The body portions are positioned on the frames such that the first and second joint pivot axes are generally aligned with the first and second frame pivot axes, respectively. Angular potentiometers are used to determine the angular displacement of the second frame with respect to the first frame about at least one of the first and second frame pivot axes upon application of at least one force to the second body portion. Torque sensors are also provided for determining a torque about at least one of the first and second frame pivot axes upon application of the force. The determined angular displacement and torque are indicative of the load-displacement and flexibility characteristics of the joint.

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Lowe et al, "Knee Analyser . . . Knee" Med. & Biol. Eng. & Comput. vol. 15, No. 5, pp. 548-552, Sep., 1977.

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