Method for determining the dynamic biomechanical characteristics of a musculoskeletal structure and for treatment of musculoskeletal disorders

摘要

A non-invasive method for determining the dynamic biomechanical characteristics (frequency response functions and natural frequency) of a musculoskeletal structure is provided. The method generally comprises exciting the musculoskeletal structure over a broad range of frequencies with a low amplitude, high velocity impulsive input force, measuring the input force with a force transducer, detecting the output motion response with an output transducer, processing input force and output response data into time-signal histories with a data acquisition and analysis means or digital computer, transforming the time- signal histories from the time domain to the frequency domain by applying Fourier analysis; and calculating a frequency response function and the natural frequency from the input force and dynamic output response time- signal histories. Having identified the natural frequency of the musculoskeletal structure, the clinician can then mobilize the structure at that frequency in order to maximize the effectiveness of spinal therapy. A hand-held, manually operated impact device for delivering a near optimal, low amplitude, high velocity, impulsive input force over a broad range of frequencies and characterized by a generally half- sinusoidal waveform is also provided.