We have treated 205 Syringomyelia patients associated with Chiari Type 1 malformation. We then investigated the relationship between factors such as gender, age, preoperative complications, and the degree of postoperative improvement to ascertain the factors with a high probability of influencing improvement by univariate and multivariate analyses. The results of univariate analysis indicated that patients with scoliosis, difficult labor, and intraoperatively confirmed arachnoiditis potentially minimized their positive surgical outcome and required greater care in their management. The results of multivariate analysis showed that Abe’s grade 1a, 2, 3a, and 4 patients could expect their symptomatic improvement in the maximum value of their own grade.
