GALACTORRHEA – The discharge of milk from the breasts.
GALLIE – Wire around lamina of C-1 and spinous process of C-2.
GAMMA KNIFE – Equipment that precisely delivers a concentrated dose of radiation to a predetermined target using gamma rays.
GASSERION GANGLION – Mass of nervous tissue lying on the sensory root of the trigeminal nerve.
GENERALIZED SEIZURES – Seizures involving widespread areas on both sides of the brain at the time of onset. The generalized nature of these seizures accounts for their dramatic manifestations, which include loss of consciousness or awareness and convulsions. About 39% epileptics suffer primarily from generalized seizures.
GETTY – For decompression of lumbar spinal stenosis; excision of lamina and portion of facet.
GILL – Removal of the posterior spinal arch in spondylolisthesis.
GILL, MANNING, and WHITE – A procedure sometimes combined with posterolateral spinal fusion.
GLASGOW COMA SCALE – The most widely used system of classifying the severity of head injuries or other neurologic diseases.
GLASGOW OUTCOME SCALE – A widely used system of classifying outcome after head injury or other neurologic diseases.
GLENOID – Resembling a socket; denoting the articular depression of the scapula entering the formation of the shoulder joint.
GLENOHUMERAL – Relating to the glenoid cavity and the humerus.
GLIA (Also termed neuroglia) – The major support cells of the brain. These cells are involved in the nutrition and maintenance of the nerve cells.
GLIOBLASTOMA – A general term for malignant forms of astrocytoma.
GLIOMA – A tumor formed by glial cells.
GLOBUS PALLIDUS – part of the basal ganglia which are brain cells that lie deep in the brain.
GOLDSTEIN – For scoliosis deformity graft incorporating posterior elements, including facet joints and ribs.
GRAFT – any free (unattached) tissue or organ for transplantation.
GRAY MATTER – The nerve cell bodies to muscle and sensory outflow and input, respectively.
GRISEL SYNDROME – Subluxation of the atlantoaxial joint from inflammatory ligamentous laxity due to infection. Can result in neurologic complications.