/Chong Yanjun(種衍軍，Dept Neurosurg，Jining 1st Peop Hosp，Shandong Jining 272011)…∥Chin J Neurosurg.-2011，27(5).-549～553

ObjectiveTo research the factors that affects the efficacy of 2 826 cases of of trigeminal neuralgia after microvascular decompression during follow-up more than 1 year.MethodsThe patients with trigeminal meuralgia were followed-up for 1-25 years(mean 9.8 years)after microvascular decompression from January 1984 to January 2009.ResultsThe long-term cure rate was 86.8%，markedly effective rate was 4.5%，efficiency was 2.0%，inefficiency was 1.6%.Pain recurrence rate was 5.1%，remaining complication rate was 7.0%，subjective satisfaction equal to or greater than 80%accounted for 85.2%，satisfaction less than 80%accounted for 14.8%.ConclusionThe patients with short course，typical symptoms，the main compression on artery and the implementation of effective decompression，which mostly contributes to a good results after operation.On contrast，the efficacy on those who with the main compression on vein and innominate artery，long course and atypical symptoms is often unsatisfactoy.15 refs.