The authors of the first description of intramedullary abscess formation reported that it occurred after spinal anesthesia following a penetrating trauma to the spinal cord . Other authors have reported cases of penetrating injuries that were coincidental with intramedullary abscess formation after a stab wound , spinal puncture [34, 35], and transpharyngeal stab injury , with the most likely mechanism of infection of direct introduction microorganisms into the spine.