Method for aligning a prosthesis
First Claim
1. A method for determining whether a prosthesis is misaligned, wherein the prosthesis comprises a socket for receiving a limb, comprising:
- obtaining signals representative of moments in an anterior/posterior plane and right/left plane experienced at a base of a prosthesis socket when a patient walks with the prosthesis for a time period;
obtaining corrected signals by applying a correction factor to the signals;
computing gait variables from the corrected signals; and
applying the gait variables to a model of alignment.
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Accused Products
Abstract
A computerized prosthesis alignment system includes a transducer that can measure socket reactions in the anterior/posterior plane and the right/left planes, while canceling or reducing the transverse forces on the measurements of these socket reactions. In addition, the transducer is also capable of determining the axial load or weight experienced by the prosthesis. The computerized prosthesis alignment system is in communication with a host computer. The moment data from the transducer is interpreted by the user via a computer interface. The host computer includes memory for storing one or more applications. These applications receive data from the transducer, interpret the data with discrete algebraic or fuzzy logic algorithms, and display the output numerically and graphically. Applications may also interpret the data to provide analysis to the user for aligning the prosthesis.
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Citations
15 Claims
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1. A method for determining whether a prosthesis is misaligned, wherein the prosthesis comprises a socket for receiving a limb, comprising:
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obtaining signals representative of moments in an anterior/posterior plane and right/left plane experienced at a base of a prosthesis socket when a patient walks with the prosthesis for a time period; obtaining corrected signals by applying a correction factor to the signals; computing gait variables from the corrected signals; and applying the gait variables to a model of alignment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification