why can cocyx bone cause numbness
1 Tumors in the spine can cause pain in the area of tumor (neck, back, or tailbone). 2  A tumor pressing on nearby nerves can cause symptoms similar to a slipped (herniated) disk. 3  These symptoms include arm or leg pain, weakness, or numbness.ost chordomas occur at the base of the spine (sacrum), in the tailbone (coccyx) or at the base of the skull (40 percent), but they can occur other places in the spine. Most patients with chordomas are between 40 and 70 years of age. Occasionally this tumor can occur in younger patients, even children.