I am unclear why you underwent a posterior laminectomy and fusion of C2-7. You had a congenital fusion of C3-4 and a “spontaneous fusion” of C5-6. This C5-6 auto-fusion is one of the factors that does not make sense. It is very rare to have an auto fusion unless you have a spondyloarthropathy (an inflammatory disorder of the spine). Are you sure it was fused or just very degenerative and did not move?
Are you sure you have a solid posterior fusion? This would require a CT to make sure.
Posterior decompressions (laminectomy) generally do not work well to decompress the nerves. You still might have foraminal stenosis or nerve tethering that was not addressed by your surgery. A new MRI or CT scan might be in order. A second opinion would also be helpful.
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.