It is true that the hospital may operate to stabilise a crumbling spine or other major bones such as hip, whereas Zometa helps to strengthen the affected bones over a period of time. Whether you are being given Zometa rather than surgery indicates less of a problem is debatable as you have already had SCC and are not mobile - it is worth asking the doctor why they have chosen one over the other.
We have had members who never walked again following SCC, and others who have recovered ... if not fully, at least enough to be able to get around. The fact that physio is saying it is too soon to tell is perhaps a good sign that the damage wasn't so catastrophic that there is no chance of recovery.
Get that PIP / disability living allowance or attendance allowance application in!