By Richard Nordquist. Like adjectives and adverbs, prepositional phrases add meaning to the nouns and verbs in our sentences. There are two prepositional phrases in the following sentence: The first prepositional phrase-- in the kitchen -- modifies the noun air; the second-- of stale food --modifies the verb reeked.
Reality: An epidural involves injecting pain-blocking medication into a space between the vertebrae and the spinal fluid; it usually takes about 15 minutes to work and lasts as long as needed. A spinal is an injection directly into the spinal fluid; it is given as part of the CSE technique and takes effect in five minutes.
Epidural Steroid Injection Overview. An epidural steroid injection is performed to help reduce the inflammation and pain associated with nerve root compression. Nerve roots can be compressed by a herniated disc, spinal stenosis, and bone spurs.When the nerve is compressed it becomes inflamed.pidural Steroid Injection Overview. An epidural steroid injection is performed to help reduce the inflammation and pain associated with nerve root compression. Nerve roots can be compressed by a herniated disc, spinal stenosis, and bone spurs.