We explored differences in
postoperative pain relief achieved through
decompression of the trigeminal nerve compressed by arteries and veins. Clinical characteristics, intraoperative findings, and postoperative curative effects were analyzed in 72 patients with
trigeminal neuralgia who were treated by
microvascular decompression. The patients were divided into arterial and venous compression groups based on intraoperative findings. Surgical curative effects included immediate relief, delayed relief, obvious reduction, and invalid result. Among the 40 patients in the arterial compression group, 32 had immediate
pain relief of
pain (80.0%), 5 cases had delayed relief (12.5%), and 3 cases had an obvious reduction (7.5%). In the venous compression group, 12 patients had immediate relief of
pain (37.5%), 13 cases had delayed relief (40.6%), and 7 cases had an obvious reduction (21.9%). During 2-year follow-up period, 6 patients in the arterial compression group experienced recurrence of
trigeminal neuralgia, but there were no recurrences in the venous compression group. Simple artery compression was followed by early relief of
trigeminal neuralgia more often than simple venous compression. However, the
trigeminal neuralgia recurrence rate was higher in the artery compression group than in the venous compression group.