A subluxation is a slight misalignment of the vertebrae, which can potentially cause many health problems. A spinal subluxation can sometimes impinge on spinal nerve roots, causing symptoms in the areas served by those roots. In the spine, this can be caused by a fracture, spondylolisthesis, rheumatoid arthritis ,severe osteoarthritis, falls, accidents, and other traumas. People with frequent subluxations are known as hypermobile. Chiropractors are specialists in correcting subluxation and other misalignments. A chiropractor can restore the misaligned vertebrae to their proper position in the spinal column. They do this manually by using the chiropractic procedure known as spinal adjustment. Your chiropractor, in most cases, will use his or her hands in applying corrective pressure to the spine in a specific direction and location. The manual force or thrust helps restore the alignment and mobility of the vertebrae. In some cases, the chiropractor may use instruments to detect a subluxation and adjust the spine. Under normal circumstances, chiropractic adjustments are painless. In cases of trauma, such as car accident, some discomfort may be experienced due to inflammation. It is also common to feel a brief sensation in the extremities immediately following an adjustment due to the sudden decompression of the affected nerve root.