Radiculopathy is not a specific condition, but rather a description of a problem in which one or more nerves are affected and do not work properly. The emphasis is on the nerve root (Radix = "root"). This can result in pain, weakness, numbness, or difficulty controlling specific muscles. In a radiculopathy, the problem is at or near the root of the nerve, along the spine. However, the pain or other symptoms may manifest in an extremity through a process called referred pain. For example, a nerve root impingement in the neck can produce pain and weakness in the forearm...