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D
Davis series— Seven X-ray views of the upper spine that are helpful in instances of whiplash injury.
Dermatomes— Tests used to reveal areas of skin, and their sensitivity, serviced by nerves distributed from the spinal cord.
Diagnosis— The act of distinguishing one health problem from another.
Diagnostic imaging— The use of X-rays, MRI, CAT scans, EMG, thermography and other tools to create pictures of the structure and function of the body.
Diathermy— The therapeutic use of high frequency current to create heat within an area of the body.
Disability— The partial or total loss of mental or physical abilities caused by an injury or disease that prevents an insured from engaging in some or all of the duties of his or her usual occupation.
Disc Herniation— An extreme bulging of the soft nucleus pulposus into a defect or weakened area of fibrous disc exterior.
Disc— A cartilage (cushion/pad) that separates each spinal vertebra, absorbs shocks to the spine and protects the nerve systems and assists in creating the four spinal lateral curves (also known as intervertebal disc).
Disease— Any deviation from or interruption of the normal structure or function of any part, organ, or system of the body that is manifested by a characteristic set of symptoms whose prognosis may be known or unknown.
Dorsal— Pertaining to the back; the twelve thoracic vertebrae are also referred to as dorsal vertebrae.
E
Edema— A condition in which fluid fills a damaged joint area with excessive fluid causing swelling similar to the swelling of a twisted ankle.
Efferent— Carrying away from a central organ; nerve impulses leaving the brain to peripheral tissues.
EMG— Electromyogram; a device used to measure muscle tone and detect subluxation patterns by detecting changes in electrical activity in millionths of a volt.
EMS— Electro-Muscle Stimulation; a form of electrical stimulation designed to reduce swelling and inflammation.
Examination— The process of inspecting and testing the body and its systems to determine the presence or absence of disease or injury.
Extension— To stretch out or to spread to its fullest length or reach.
F
Facet— A small, smooth area on bone or other hard surface.
Facilitative Lesion— A twisting or stretching of nerve tissue due to a malfunctioning spine.
Fixation— Being held in a fixed position. An area of the spine with restricted movement.
Flaccid— Soft, limp.
Flexion— To bend to the side, forward, or backward.
Foramen— A small opening.
Frontal— Pertaining to the forehead.

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