1. There is no point- you are looking for the effect of local anesthetic on the nerves you plan to ablate.
2. Steroids may give a systemic effect which will render the test blocks useless
3. intravascular particulate steroid, if entering a radicular artery or the vertebral will result in quadriplegia or death
4. there is no evidence whatsoever for intra-articular cervical facet injections nor steroid to medial branch nerves.
5. the insurance company will deny the rf if test blocks are performed in this manner.
This issue brings up one of my pet peeves- the academic departments, as they are often inbred and do not do as many procedures as private practice, are not training fellows adequately. The quality of those coming out of training programs has had a linear decline over time, which is a direct reflection of those training them. It is a case of "one upmanship" at universities as to who can be the most conservative, not the most helpful. This often results in university programs doing absolutely nothing for a patient and being damn proud of it.
The blind leading the blind.