Computer system and method for assessing dynamic bone quality

摘要

A computer system for assessing dynamic bone quality is provided, including a memory that stores executable instructions, a central processing unit (CPU) capable of accessing the memory and executing the instructions to provide an output, and a receiver for receiving data input and transmitting it to the CPU, wherein the receiver is operably connected to: (1) a plurality of accelerometers, each accelerometer adapted to contact an exterior surface of a human subject at a load-bearing anatomical site and to receive input from each point of contact including acceleration response data; and (2) a force plate adapted to receive input including vertical ground reaction force data provided by a heel strike on the force plate, wherein the CPU executes the instructions to process the input data transmitted from the receiver to provide the output as a bone damping value. A method for assessing dynamic bone quality is also provided.

主权项

1. A computer system for assessing dynamic bone quality, the system comprising:
a memory that stores executable instructions; a central processing unit (CPU) capable of accessing the memory and executing the instructions to provide an output; and a receiver for receiving data input and transmitting the data input to the CPU; wherein the receiver is operably connected to:
(1) at least one accelerometer, contacting an exterior surface of a human subject with each at least one accelerometer located at a respective anatomical site of the human subject to generate acceleration response data indicative of a rate of change of velocity at each respective site of contact; and(2) a force plate adapted to generate vertical ground reaction force data that is indicative of a heel strike on the force plate; wherein the CPU receives the acceleration response data from the at least one accelerometer and the vertical ground reaction force data from the force plate and executes the instructions to transform the acceleration response data and the vertical ground reaction force data into a bone damping value by:
i) determining a Fast Fourier Transform (FFT) of the vertical ground reaction force data and a FFT for each of the acceleration response data sets received from each of the at least one accelerometer located at an anatomical site of interest; andii) determining a Frequency Response Function (FRF) for each of the anatomical sites by dividing the FFT of the vertical ground reaction force data by the respective FFT acceleration response data collected from the respective at least one accelerometer at each anatomical site.