Glossary
- INTERNAL FIXATION
- The immobilization of bone fragments or joints with implants in order to promote healing or fusion.
- INTERSPINOUS LIGAMENT
- Ligament between each of the spinous processes.
- INTERSPINOUS PSEUDARTHROSIS
- Formation of a false joint between two spinous processes.
- INTERVERTEBRAL DISC
- See Disc (Intervertebral).
- INTERVERTEBRAL DISC NARROWING
- Narrowing of the space between any two vertebral bodies.
- INTRA-AORTIC BALLOON COUNTER PULSATION DEVICE
- A pump which is inserted into the main vessel of the body, the aorta, to help the heart deliver blood to critical organs such as the brain or kidneys.
- INTRA-ARTERIAL CATHETERIZATION ANGIOGRAPHY
- An invasive study in which a catheter (a small tube) is placed in the artery and contrast material is injected to which makes the blood vessels visible on an X-Ray image. The catheter is inserted in the groin into the femoral artery (the artery to the leg) through a needle, and is guided into the arteries in the neck and head. This study is associated with a very small (less than 0.05 % chance of serious complications) and requires the patient to lie in bed for approximately six hours to allow the leg vessel to heal.
- INTRACEREBELLAR
- Within the cerebellum.
- INTRACEREBRAL
- Within the cerebrum.
- INTRACEREBRAL HEMATOMA
- A blood clot within the brain.
- INTRACRANIAL
- Within the cranium of the skull.
- INTRACRANIAL PRESSURE (ICP)
- The overall pressure inside the skull.
- INTRAMEDULLARY
- Refers to medullaris, marrow; (1) withing the medulla oblongata of the brain, (2) within the spinal cord, and (3) within the marrow cavity of bone.
- INTRAOPERATIVE CISTERNOGRAPHY
- Administration of a contrast dye into the ventricles which are chambers in the brain that contain brain fluid.
- INTRINSIC
- Situated entirely within or pertaining exclusively to a part.
- INVESTIGATIONAL DEVICE EXEMPTION (IDE)
- A FDA regulatory status which permits the human use of an unapproved medical device for the purposes of collecting clinical data under strictly controlled conditions.
- ISCHEMIA
- Inadequate circulation of blood generally due to a blockage of an artery.
- ISOLA
- A posterior fixation device.
- ISOMETRIC
- Of equal dimensions. In physiology, denoting the condition when the ends of a contracting muscle are held fixed so that contraction produces increased tension at a constant overall length.
- ISOTONIC
- Relating to isotonicity or isotonia. Having equal tension; denoting solutions possessing the same osmotic pressure; more specifically, limited to situations in which cells can neither swell nor shrink.
- ISTHMIC
- The lesion is in the pars interarticularis. Three types occur: lytic, fatigue fracture of the pars interarticularis; elongated but intact pars interarticularis; and acute fracture of the pars interarticularis.
- JACOBS LOCKING HOOK
- Thick, threaded rods for fixation of various spinal deformities.
- JARCHO-LEVIN SYNDROME
- Extensive defects of the spine with associated defects in the ribs leading to a small, stiff thorax and pulmonary compromise.
- JOINT
- The junction or articulation of two or more bones that permits varying degrees of motion between the bones.
- JOINTS of LUSCHKA (uncovertebral joints)
- Unique to the cervical spine, these jointlike structures are formed by the apposition of posterolateral portions of adjacent vertebral bodies; forms the anterior portion of the canal where nerves pass through.
- JUGULAR VEIN
- The major vein on each side of the neck draining blood from the head towards the heart. Large obvious vein in the neck.
- JUVENILE RHEUMATOID ARTHRITIS
- generalized inflammatory joint disease in children.
- JUVENILE SCOLIOSIS
- Begins between the ages of 3 and 10 years of age.
- KANEDA
- An anteriorly placed fixation device for spinal deformities.
- KINETIC
- Relating to motion or movement.
