OCCIPITAL NERVE - Nerve from the back of the neck that
supplies motor function and sensation to the forehead;
two parts- greater and lesser.
OCCIPUT - The back part of the head. The base of the
OLIGODENDROGLIA - Non-nerve cells, (see glia) forming
part of the supporting structure of the central nervous
OLIGODENDROGLIOMA - A growth of new cells derived from
OLISTHY - Slipping of bone(s) from normal anatomic
site; for example, a slipped disc.
OPHTHALMOPLEGIA - Paralysis of one or more of the eye
ORTHOPAEDICS (also ORTHOPEDICS) - The medical specialty
involved in the preservation and restoration of function
of the musculoskeletal system that includes treatment
of spinal disorders and peripheral nerve lesions.
ORTHOPAEDIC IMPLANTS - Medical devices used to replace
or provide fixation of bone or to replace articulating
surfaces of a joint.
ORTHOPEDIC SURGEON - A physician who treats the musculoskeletal
system, extremities, and spine by operation or manipulation.
OSTEOINDUCTIVE - A material with the ability to induce
bone to grow
OSSIFICATION - The process of forming bone in the body.
OSTEOARTHRITIS - Arthritis characterized by erosion
of articular cartilage, either primary or secondary
to trauma or other conditions, which becomes soft, frayed,
and thinned with eburnation of subchondral bone and
outgrowths of marginal osteophytes.
OSTEOMA - A benign tumor of bone.
OSTEOMYELITIS - Inflammation of bone due to infection,
which may be localized or generalized.
OSTEOPHYTE - A bony outgrowth or protuberance.
OSTEOPOROSIS - A disorder in which bone is abnormally
brittle, less dense, and is the result of a number of
different diseases and abnormalities.
OTHER NERVES (twelfth cranial) - Transcervical, supraclavicular,
posterior rami, facial, greater auricular, and hypoglossal.
OVERTON - A dowel graft that is applied across facet
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