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Glossary - I
ICD-9: A coding system that provides a number for each type of medical diagnosis.
IDET: Intradiscal Electrothermy. A process in which a wire is placed into the intervertebral disc to attempt to melt and repair an annular tear.
iliac arteries: The large arteries in the pelvis that start at the low end of the aorta and become the major arteries leading into each leg.
iliac crest bone graft: A bone graft taken from the hipbone, or iliac crest.
iliac veins: The two large veins that feed from each of the legs into the inferior vena cava in the low abdomen, the largest vein of the body.
impingement syndrome: Abnormal joint function, such as in the shoulder or knee.
incentive spirometer: A device used by a patient after surgery to exercise and expand the lungs to prevent pneumonia and treat atelectasis.
indemnity plan: A type of medical insurance in which payment is made for individual medical charges as they arise.
inferior: Lower in the body, towards the feet.
inflammation: A natural process in the body in which there is local irritation, heat, redness, and typically pain.
informed consent: An agreement by a patient to allow a practitioner to perform a procedure in which the patient understands what is to be done to the best reasonable level.
innervate: Effect of a nerve reaching muscle or skin that provides movement or sensation.
instrumentation, spinal: Screws, rods, plates, and other devices used to hold spinal elements in place during or after surgery.
interbody implant: Device, made either of bone, metal or synthetic materials, that is used to replace an intervertebral disc.
intercostal nerves: Nerves that commence in the thoracic spine and travel under the inferior margin of a rib around to the front of the body.
intradiscal electrothermy: See IDET.
intradiscal injection: See discogram.
intradural: Inside the dura membranes.
intraoperative X-rays: X-rays taken during surgery.
intravenous sedation: Sedating medication given through the blood stream to allow a patient to tolerate a procedure but without producing a full general anesthesia requiring intubation.
iodine: An element used for intravenous contrast and X-ray studies.
isometric: Maintaining the length of a muscle while the tension changes.