Glossary – H
Harrington rod: An old type of spinal instrumentation used to correct scoliosis.
health maintenance organization: A type of insurance coverage for medical care in which all care is given by a group of doctors who are under contract to provide services at a reduced fee.
herniated disc: A lumbar intervertebral disc in which a portion of the nucleus pulposus has moved to an abnormal position.
hologram: A three-dimensional image projection.