Can you tell me about spinal cord compression, radiculopathy and brachial neuritis. what i would like to know i?

Radiculopathy : Spinal cord compression is often caused by a combination of a herniated disc and bone spurs (osteophytes). Radiculopathy is a compression of the nerve root as it exits the spinal canal. Brachial neuritis (Parsonage Turner Syndrome) is inflammation of the nerves that have already exited the spinal canal but have not reached their target muscle group.