Surgery – Diagnostic testing – Measuring anatomical characteristic or force applied to or...
Patent
1996-03-27
1999-07-06
Mulcahy, John
Surgery
Diagnostic testing
Measuring anatomical characteristic or force applied to or...
600546, 402 8, 601 33, 7337901, A61B 511
Patent
active
059191481
ABSTRACT:
Apparatus for evaluating the stability of the shoulder joint of a human subject includes a rotatable, elbow-holding assembly that has sensors and associated processing components for producing an indication of the rotational angle of the long axis of the humerus of the subject relative to a reference. Sensors measure muscle activity as the humerus is rotated. Changes in the muscle activity measurement are processed to produce an indication of the changes in the subject's apprehension as the humerus is moved. The apparatus may include a clock that indicates the times when muscle activity occurs. The levels of muscle activity may be recorded at different times and indicated to the operator. Pressure can be applied in a direction normal to the long axis of the humerus, and sensors produce an indication of the level of the applied pressure and corresponding apprehension of the subject. Also available is an indication of the level of muscle activity that occurs when such pressure is applied.
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Day Brian
Jameson Michael
Lawrence Peter D.
Marko Alexei J.
McEwen James A.
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