In the 12 years from 1989 to 2000, we operated on 27 patients with vertebral osteomyelitis. The patients included 17 males and 10 females with a mean ago of 62.4 years (range: 42 to 83 years). Generally, anterior fusion is performed on patients with vertebral osteomyelitis. However we treated 9 patients out of 27 by posterior fusion using Luque rods, because of their poor general condition. Our study showed that this low invasive poeration is useful for patients with poor general conditions (elderey patients, hemodialysis patients, etc.).