| 1 | Najash retained a sacrum, a bony feature that supported the pelvis. | |
| 2 | This pain can be caused by the sacrum either slipping forward or backward in relationship to the ilium. | |
| 3 | Then lengthen your tailbone and sacrum as your thighbones descend toward your hamstrings. | |
| 4 | Osteochondroma is a rare primary benign bone tumor that can occur in the sacrum. | |
| 5 | Remember that sitting in and of itself "unlocks" the sacrum and the ilium. |