Tom, my two cents: get several opinions on what is causing the myelomalacia. Irritation is one thing, an undiagnosed condition is quite another.
E.g., if the blood supply is compromised to the cervical segment, which corrective option is best?! If bone growth is THE question post-op, which option is safest for the long term?
Sorry to say you have your work cut out for you. No pun intended.
Many sources (web sites and doctors) say the same thing about myelomalacia:
"...The exact medical term means different things, depending on the reason why the condition exists. In virtually all cases, the condition involves bleeding within the actual spinal cord, due to trauma, disease process or other event..."
This should be re-written, for patients in your situation, to read:
"...The exact medical term means different things, depending on the reason why the condition exists. In virtually all cases, the condition involves bleeding within the actual spinal cord, due to trauma,
AND/OR disease process
AND/OR or other event.
These conditions are almost always multifactorial, IMHO.