| A
Spinal Cord Injury (SCI) is damage to the
spinal cord that results in a loss of function
such as mobility or feeling.
The spinal cord does not have to be severed
in order for a loss of functioning to
occur. In fact, in most people with SCI,
the spinal cord is intact, but the damage
to it results in loss of functioning.
SCI is very different from back injuries
such as ruptured disks, spinal stenosis
or pinched nerves.
A person can "break their back or
neck" yet not sustain a spinal cord
injury if only the bones around the spinal
cord (the vertebrae) are damaged, but
the spinal cord is not affected. In these
situations, the individual may not experience
paralysis after the bones are stabilized.
Classification & Terminology
The effects of SCI depend on the type
of injury and the level of the injury.
SCI can be divided into two types of injury
- complete and incomplete.
Complete: A complete injury means that
there is no function below the level of
the injury; no sensation and no voluntary
movement. Both sides of the body are equally
affected.
Incomplete: An incomplete injury means
that there is some functioning below the
primary level of the injury. A person
with an incomplete injury may be able
to move one limb more than another, may
be able to feel parts of the body that
cannot be moved, or may have more functioning
on one side of the body than the other.
With the advances in acute treatment of
SCI, incomplete injuries are becoming
more common.
The following terminology has developed
around classification of SCI:
- Tetraplegia (replaced
the term quadriplegia) - Injury to the
spinal cord in the cervical region with
associated loss of muscle strength in
all 4 extremities
- Paraplegia - Injury
in the spinal cord in the thoracic,
lumbar, or sacral segments, including
the cauda equina and conus medullaris
Other terms you may encounter include:
ALIF
Anterior Lumbar Interbody Fusion - is
the placement of bone or cages between
vertebrae from an anterior approach.
Annulus
The outer portion of a disc in the spinal
column, the annulus provides structure
and strength to a disc and is comprised
of a complex series of interwoven layers
of fibrous tissues, which hold it's nucleus
in place.
Anterior
Refers to the frontal or ventral surface
of the body.
Arthroscopic Lumbar Discectomy
PLD using an endoscope for visualization.
Autograft
This refers to bone taken from the patient,
usually the hip, to be used as graft.
Bone Graft
An option for fusing the spine. This requires
either moving bone from one part of the
body (autograft) or using bone from an
outside source (allograft).
Cat Scan
Computerized x-ray system which provides
cross-sectional images of the spine or
other parts of the body. Sometimes is
done following a myelogram or discogram.
Cervical
Pertains to the neck.
Conservative Therapy
Method of relieving pain with bed rest,
analgesics and chiropractic and physical
therapy.
Degenerative Disc Disease
Deterioration in disc structure and function,
which commonly causes pain and loss of
function.
Diagnostic
Test or process used to determine the
source of a problem, i.e., a diagnosis.
Disc
Discs serve as shock absorbers between
the vertebrae of the spinal column. The
center of the disc is known as the nucleus
and the outer ring of the disc is called
the annulus.
Discectomy
The procedure where a disc is removed
surgically.
Discogram
Provocative discography is the instillation
of sterile saline (not dye) into the disc
to try and reproduce the patient's pain.
Dorsal
Refers to a position toward the posterior
or back side of the body.
Fusion
Growth of bone where bone does not normally
grow, as in replacing a disc with a bone
graft. The bone graft is normally taken
from the patient or a donor.
Herniated Disc
AKA a slipped disc, is a condition in
which nucleus tissue is moved from the
center of a disc into the spinal canal.
Herniated discs cause great pain in the
low back and leg or the neck and arm and
they create pressure against one or more
of the spinal nerves. Other names for
herniated discs are prolapsed discs or
ruptured discs.
Interbody Fusion
Placing of a graft or cages between vertebral
bodies.
Kyphoplasty
A surgical procedure designed to stop
the pain caused by the bone fracture,
stabilize the bone, and to restore the
lost vertebral body height due to the
compression fracture.
Laminectomy
Surgery technique in which part of the
back of the vertebra is removed in order
to reach to the nerves and discs. This
may or may not require the disc be removed
as part of the procedure.
Ligaments
This is bands of fibrous tissue that connect
bones or cartilages that support and strengthen
the bone joints. Ligaments surround the
spine on all sides.
Lumbar
This refers to the lower back.
Microdiscectomy
Surgical technique for removal of a disc
via a small opening using a microscope.
Morbidity
Refers to postoperative pain and complications
from to surgery.
MRI Scan
Computerized magnetic imaging system that
provides cross-sectional images of the
spine or other body parts.
Myelogram
Diagnostic procedure in which an iodine
is injected as a dye into the spinal canal
and shows up on x-rays that are taken.
Nucleus
The center part of a disc and is made
of a soft, rubber-like material that takes
the shock of movement such as standing,
walking, running, etc.
Pedicle Fixation
Invlolves placing bone screws into the
spine from a posterior approach through
what is known as the pedicle. Screws are
then used with a rod or plate to keep
the spine stable following bone grafting.
Percutaneous Cervical Discectomy
An outpatient procedure that uses minimally-invasive
suction to remove herniated cervical discs.
Percutaneous Lumbar Discectomy
PLD using an endoscope for visualization.
PLIF
Stand for Posterior Lumbar Interbody Fusion,
which is the placement of bone or cages
between vertebrae from a posterior approach.
PLITF
Stands for Posterior Lateral Inter-Transverse
Process Fusion, which involves the placement
of bone graft on and between transverse
process of vertebrae to promote bone fusion.
Porous
Surface area amount which allows for bone
growth from the implant.
Posterior
This term refers to the back or dorsal
surface of the body.
Prolapsed Disc
AKA a slipped disc, is a condition in
which nucleus tissue is moved from the
center of a disc into the spinal canal.
Herniated discs cause great pain in the
low back and leg or the neck and arm and
they create pressure against one or more
of the spinal nerves. Other names for
herniated discs or ruptured discs.
Ruptured Disc
See above
Sacrum
This is the lower portion of the spinal
column.
Slipped Disc
See Ruptured Disc.
Spinal Cord
This is the primary nervous system, that
runs from base of the skull to the lower
back via the spinal canal. Problems or
impingement of bony or soft tissues on
cord or nerve roots is primary reason
for spine surgery.
Spinal Fusion
Surgical treatment for back pain in which
the disc between two adjacent vertebrae
is removed. Then two vertebrae are fused
using bone graft and instrumentation methods.
Spine
This is the structure composed of vertebrae,
discs, and ligaments. It contains 26 vertebrae
in five separate regions. There are 7
cervical, 12 thoracic, 5 lumbar, 1 sacral,
and 1 coccygeal vertebrae. The primary
function of the spine are body support
and spinal cord protection.
Spinal Column
Longitudinal skeletal axis of the human
body that is composed of 26 distinct bones
which are called vertebrae.
Therapeutic
A procedure which is related to the treatment
of disease in the human body.
Thoracic Spine
The twelve vertebrae in mid-torso that
are attached to the rib cage.
Thorax
The portion of the chest composed of the
spine, ribs and, breast bone.
Titanium Alloy
This is a very bio-compatible material
with great fatigue strength and good imaging
characteristics.
Vertebra
This a bone that is used as a building
block for the spinal column.
Vertebral Column
The longitudinal skeletal axis of the
body that is composed of 26 distinct bones
which are called vertebrae.
|