You have an injury to your odontoid process. The first two vertebra are very different than the last 22 vertebra which are all quite similar. C2 has a process projecting from it that fits into the C1 ring. This “peg” or odontoid process allows C1 to rotate around this “peg” and this is where at least 50% of your rotation of your head on your neck comes from.
Unfortunately, this odontoid process also can fracture and this is what has happened to you. This is generally an unstable problem and may need to be addressed surgically. There are many different ways to fix this problem depending upon the fracture configuration and how long ago the fracture occurred. Since it seems like “months” have passed since this fracture has occurred, you probably need a fusion of C1 to C2. The cord injury is worrisome as this means the cord was compressed probably during the initial event that caused your fracture. Don’t hesitate to have this fixed as soon as possible.
Dr. Corenman
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.