Spina bifida occulta results from abnormal neurulation, characterized by incomplete dorsal midline closure of the osseous tissues; thus leaving the spinal cord relatively unprotected. Spina bifida occulta of the sacrum is the most common type of spinal abnormality. We report a case of total spina bifida occulta, in a dried sacrum specimen. This developmental defect must be considered for the sake of patient safety before undertaking caudal epidural block. If not, serious complications such as dural puncture may easily occur.
