Osteomyelitis of the symphysis pubis is rare and it has signs and symptoms similar to those of osteitis pubis: distal anterior thigh pain, spasm of the adductor and rectus abdominis muscle and waddling gait. Unlike ostetitis pubis, the clinical course of osteomyelitis is progressive, with increasing bone destruction and widening of the symphysis on plain radiographs, and is curable by surgical treatment. We report a case of osteomyelitis of the symphysis pubis diagnosed by MRI and treated by debridement and curettage with appropriate antibiotics.