Incomplete, or partial, joint or organ dislocations are known as subluxations. Most cases of subluxation fall into one of two categories: chiropractic subluxation or medical subluxation. Medical subluxation refers to a structural displacement significant enough to appear on static imaging studies. There are many different subcategories of subluxation, including orthopedic, ophthalmologic, and dental. Orthopedic subluxation may affect the elbow, shoulders, fingers, knees, ankles, hips, and wrists. Such subluxations may require medical attention to relocate the joint. Displacements may result from fractures, spondylolisthesis, rheumatoid arthritis, osteoarthritis, and trauma resulting from falls or other accidents. Patients who repeatedly experience subluxation are sometimes referred to as hypermobile. One of the most common sites of subluxation is the spine (i.e., vertebral subluxation). This condition occurs when one or more vertebrae move out of position and put abnormal pressure on spinal nerves, causing irritation and pain. If left untreated, the pain can worsen and spread. Subluxation is usually diagnosed with X-rays, although some patients may have to undergo other diagnostic imaging procedures, such as MRI—especially if spinal cord compression is suspected. Treatments for subluxation may include rest, use of supportive devices, manual therapy and manipulations, and in some severe cases, surgery to correct the underlying structural issue.