[Measurement technique for the cracking sounds during spinal manipulation].

OBJECTIVE

To design a set of equipment to collect, locate and analyze the cracking sounds during spinal manipulation.

METHODS

On the basis of reviewing the current techniques for cracking sound measurement, we designed a cracking measurement system consisting of a pulse generator, transmission/reception interface, calibrating wave generator, compound sensors, computer, analytical software, and output components.

RESULTS

Preliminary experiments demonstrated that the cracking sounds could be detected at a distance of 40 cm, suggesting that this system was technically feasible with some improvements to be made.

CONCLUSION

This device can be used for collecting, locating and analyzing the cracking sounds during spinal manipulation.