Animal experimental study on the nerve root retraction with a silicon pressure sensor

For avoiding or reducing iatrogenic nerve faction impairment due to excessive nerve root retraction, a silicon piezoresistive pressure sensor is employed at the nerve root retractor, which would offer surgeons a numerical retraction reference and improve the performance of spine surgery. The sensor is used to measure the pressure exerted upon the retracted nerve root during animal experiments. Simultaneously, the experiments are monitored by electromyogram to get neuromuscular responses. The relationship between pressure exerted on the nerve root and corresponding neuromuscular responses would be founded by results of experiments, which could show that degree of nerve root damage impairment is positively correlated with nerve root retraction.