A 74-year-old man visited our hospital, because of high prostate specific antigen (PSA). Retropubic radical prostatectomy was performed for prostatic cancer. Suddenly right inguinal lesion pain appeared at 25 days after operation with disturbance of gait. Pelvic magnetic resonance imaging (MRI) demonstrated inflammatory change in right pubic bone, pectineal muscle, adductor muscle, which suggested the diagnosis of osteomyelitis of the pubis. After long-term administration of antibiotic therapy, osteomyelitis of the symphysis pubis and gait possible. There was no recurrence of osteomyelitis of the symphysis pubis at one year after operation. In addition to our case, we review the 8 cases of osteomyelitis of the pubis after radical prostatectomy previously reported in Japanese publications.