Abstract:To study the effect of syringe-shunt with T tube by pressure determination of intra/extra syrin, the pressures of intra/extra syringx of 28 syringomyelia cases were measured during the operation. In these cases, 21 syringomyelia cases were practiced by syringe-peritoneal shunt with T tube, and 7 cases were practiced by syringx-peritoneal shunt. The clinical symptoms and imaging data were analyzed during the follow-ups ranging from 3 months to 4 years (1.9 years on average). The clinical symptoms were significantly improved, with an improvement rate of 84.8%. The imaging follow-up studies show that all of patients' syrinx cavities are significantly shrinked. Among these cases, syrinx has disappeared completely in 9 cases, and in other 19 cases it is shrinked. Effective rate of shunt is 100%. The results show that it is a reasonable and reliable method to treat the syrinx cavity by using syrinx-shunting by pressure determination of intra/extra syrinx with T tube.