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Med Terms Chap 6
Musculoskeletal System
209
Medical
Undergraduate 1
02/25/2009

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Term
ankyl/o
Definition
crooked or stiff
Term
arthr/o
articul/o
Definition
joint (articulation)
Term
brachi/o
Definition
arm
Term
cervic/o
Definition
neck
Term
chondr/o
Definition
cartilage (gristle)
Term
cost/o
Definition
rib
Term
crani/o
Definition
skull
Term
dactyl/o
Definition
digit (finger or toe)
Term
fasci/o
Definition
fascia (a band)
Term
femor/o
Definition
femur
Term
fibr/o
Definition
fiber
Term
kyph/o
Definition
humpback
Term
lei/o
Definition
smooth
Term
lord/o
Definition
bent
Term
lumb/o
Definition
loin (lower back)
Term
myel/o
Definition
bone marrow or spinal cord
Term
my/o
myos/o
muscul/o
Definition
muscle
Term
oste/o
Definition
bone
Term
atell/o
Definition
knee cap
Term
pelv/i
pelv/o
Definition
hip bone or pelvic cavity
Term
radi/o
Definition
radius
Term
rhabd/o
Definition
rod shaped or striated (skeletal)
Term
sarc/o
Definition
flesh
Term
scoli/o
Definition
twisted
Term
spondyl/o
vertebr/o
Definition
vertebra
Term
stern/o
Definition
sternum (breastbone)
Term
ten/o
tend/o
tendin/o
Definition
tendon (to stretch)
Term
thorac/o
Definition
chest
Term
ton/o
Definition
tone or tension
Term
uln/o
Definition
ulna
Term
appendicular skeleton
Definition
bones of shoulder, pelvis, and upper and lower extremities
Term
axial skeleton
Definition
bones of skull, vertebral column, chest, and hyoid bone (U-shaped bone lying at the base of the tongue)
Term
bone
Definition
specialized connective tissue compsed of osteocytes (bone cells) forming the skeleton
Term
compact bone
Definition
tightly solid, strong bone tissue resitant to bending
Term
spongy (cancellous) bone
Definition
mesh-like bone tissue containing marrow and fine branching canals through which blood vessels run
Term
long bones
Definition
bones of arms and legs
Term
short bones
Definition
bones of wrists and ankles
Term
flat bones
Definition
bones of ribs, shoulder blades, pelvis, and skull
Term
irregular bones
Definition
bones of vertebrae and face
Term
sesamoid bones
Definition
round bones found near joints (e.g., patella)
Term
epiphysis
Definition
wide ends of a long bone (physis = growth)
Term
diaphysis
Definition
shaft of a long bone
Term
metaphysis
Definition
growth zone between epiphysis and diaphysis during development of a long bone
Term
endosteum
Definition
membrane lining the medullary cavity of a bone
Term
medullary cavity
Definition
cavity within the shaft of the long bones filled with bone marrow
Term
bone marrow
Definition
soft connective tissue within the medullary cavities of bones
Term
red bone marrow
Definition
found in cavities of most bones in infants; functions in formation of red blood cells, some white blood cells, and platelets; in adults, red bone marrow is found most often in the flat bones
Term
yellow bone marrow
Definition
gradually replaces red bone marrow in adult bones, functions as strorage for fat tissue, and is inactive in formation of blood cells.
Term
periosteum
Definition
a fibrous, vascular membrane that covers the bone
Term
articular cartilage
Definition
a gristle-like substance found on bones where they articulate
Term
articulation
Definition
a joint; the point where two bones come together
Term
bursa
Definition
a fibrous sac between certain tendons and bones that is lined with a synovial membrane that secretes synovial fluid
Term
disk(disc)
Definition
a flat, plate-like structure composed of fibrocartilaginous tissue found between the vertebrae to reduce friction
Term
nucleus pulposus
Definition
the soft, fibrocartilaginous, central portion of intervertebral disk
Term
ligament
Definition
a flexible band of fibrous tissue that connects bone to bone
Term
synovial membrane
Definition
membrane lining the capsule of a joint
Term
synovial fluid
Definition
lubricating fluid secreted by the synovial membrane
Term
muscle
Definition
tissue composed of fibers that can contract, causing movement of an organ or part of the body
Term
striated (skeletal) muscle
Definition
voluntary striated muscle attached to the skeleton
Term
smooth muscle
Definition
involuntary muscle found in internal organs
Term
cardiac muscle
Definition
muscle of the heart
Term
origin of a muscle
Definition
muscle end attached to the bone that does not move when the muscle contracts
Term
insertion of a muscle
Definition
muscle end attached to the bone that moves when the muscles contracts
Term
tendon
Definition
a band of fibrous tissue that connects muscle to bone
Term
fascia
Definition
a band or sheet of fibrous connective tissue that covers, supports, and separates muscle
Term
coronal (frontal) plane
[body plane]
Definition
vertical division of the body into front (anterior) and back (posterior) positions
Term
sagittal plane
[body plane]
Definition
vertical division of the body into right and left portions
Term
transverse plane
[body plane]
Definition
horizontal division of the body into upper and lower portions
Term
anterior (A) (ventral)
[terms of position and direction]
Definition
front of the body
Term
posterior (P) (dorsal)
[terms of position and direction]
Definition
back of the body
Term
anterior-posterior (AP)
[terms of position and direction]
Definition
from front to back; commonly associated with the direction of an x-ray beam
Term
posterior-anterior (PA)
[terms of position and direction]
Definition
from back to front; commonly associated with the direction of an x-ray beam
Term
superior (cephalic)
[terms of position and direction]
Definition
situated above another structure, toward the head
Term
inferior (caudal)
[terms of position and direction]
Definition
situated below another structure, away from the head
Term
proximal
[terms of position and direction]
Definition
toward the beginning or origin of a structure [e.g., the proximal aspect of the femur (thigh bone) is the area closest to where it attaches to the hip]
Term
distal
[terms of position and direction]
Definition
away from the beginning or origin of a structure [e.g., the distal aspect of the femur (thigh bone) is the area at the end of the bone near the knee]
Term
medial
[terms of position and direction]
Definition
toward the middle (midline)
Term
lateral
[terms of position and direction]
Definition
toward the side
Term
axis
[terms of position and direction]
Definition
line that runs through the center of the body or a body part
Term
erect
[body positions]
Definition
normal standing position
Term
decubitus
[body positions]
Definition
lying down, especially in bed; i.e., lateral decubitus is lying on the side (decumbo = to lie down)
Term
prone
[body positions]
Definition
lying face down and flat
Term
recumbent
[body positions]
Definition
lying down
Term
supine
[body positions]
Definition
horizontal recumbent; lying flat on the back--"on the spine"
Term
flexion
[body movements]
Definition
bending at the joint so that the angle between the bones is decreased
Term
extension
[body movements]
Definition
straightening at the joint so that the angle between the bones is increased
Term
abduction
[body movements]
Definition
movement away from the body
Term
adduction
[body movements]
Definition
movement toward the body
Term
rotation
[body movements]
Definition
circular movement around axis
Term
eversion
[body movements]
Definition
turning outward, i.e., of a foot
Term
inversion
[body movements]
Definition
turning inward, i.e., of a foot
Term
supination
[body movements]
Definition
turning upward or forward of the palmar surface (palm of the hand) or plantar surface (sole of the foot)
Term
pronation
[body movements]
Definition
turning downward or backward of the palmar surface (palm of the hand) or plantar surface (sole of the foot)
Term
dorsiflexion
[body movements]
Definition
bending of the foot or the toes upward
Term
plantar flexion
[body movements]
Definition
bending of the sole of the foot by curling the toes toward the ground
Term
range of motion (ROM)
[body movements]
Definition
total motion possible in a joint, described by the terms related to body movements, i.e., ability to flex, extend, abduct, or adduct; measured in degrees
Term
goniometer
[body movements]
Definition
instrument used to measure join angles (gonio = angle)
Term
arthralgia
[symptomatic]
Definition
joint pain
Term
atrophy
[symptomatic]
Definition
shrinking of tissue such as muscle
Term
crepitation
crepitus
[symptomatic]
Definition
grating sound made by movement of some joints or broken bones
Term
exostosis
[symptomatic]
Definition
a projection arising from a bone that develops from cartilage
Term
flaccid
[symptomatic]
Definition
flabby, relaxed, or having defective or absent muscle tone
Term
hypertrophy
[symptomatic]
Definition
increase in the size of tissue such as muscle
Term
hypotonia
[symptomatic]
Definition
reduced muscle tone or tension
Term
myalgia
myodynia
[symptomatic]
Definition
muscle pain
Term
ostealgia
osteodynia
[symptomatic]
Definition
bone pain
Term
rigor or rigidity
[symptomatic]
Definition
stiffness; stiff muscle
Term
spasm
[symptomatic]
Definition
drawing in; involuntary contraction of muscle
Term
spastic
[symptomatic]
Definition
uncontrolled contractions of skeletal muscles causing stiff and awkward movements (resembles spasm)
Term
tetany
[symptomatic]
Definition
tension; prolonged, continuous muscle contraction
Term
tremor
[symptomatic]
Definition
shaking; rhythmic muscular movement
Term
ankylosis
[diagnostic]
Definition
stiff joint condition
Term
arthritis
[diagnostic]
Definition
inflammation of the joints characterized by pain, swelling, redness, warmth, and limitation of motion--there are more than 100 different types of arthritis
Term
osteoarthritis (OA)
degenerative arthritis
degenerative joint disease (DJD)
[diagnostic]
Definition
most common form of arthritis that especially affects weight-bearing joints (e.g., knee, hip); characterized by the erosion of articular caritlage
Term
rheumatoid arthritis (RA)
[diagnostic]
Definition
most crippling form of arthritis characteriezed by a chronic, systemic infalmmation most often affecting joints and synovial membranes (especially in the hands and feet) causing ankylosis (stiff joints) and deformity
Term
gouty arthritis
[diagnostic]
Definition
acute attacks of arthritis usually in a single joint (especially the great toe) caused by hyperuricemia (an excessive level of uric acid in the blood)
Term
bony necrosis
sequestrum
[diagnostic]
Definition
dead bone tissue from loss of blood supply such as can occur after a fracture (sequestrum = something laid aside)
Term
bunion
[diagnostic]
Definition
swelling of the joint at the base of the great toe caused by inflammation of the bursa
Term
bursitis
[diagnostic]
Definition
inflammation of a bursa
Term
carpal tunnel syndrome
[diagnostic]
Definition
condition that results from compression of the median nerve within the carpal tunnel at the wrist, characterized by pain, numbness, and tingling in the wrist and fingers and weak grip; commonly seen as a result of cumulative trauma of surrounding tendons
Term
chondromalacia
[diagnostic]
Definition
softening of cartilage
Term
epiphysitis
[diagnostic]
Definition
inflammation of epiphyseal regions of the long bone
Term
fracture (Fx)
[diagnostic]
Definition
a broken or cracked bone
Term
closed fracture
[diagnostic]
Definition
a broken bone with no open woudn
Term
open fracture
[diagnostic]
Definition
compound fracture; a broken bone with an open wound
Term
simple fracture
[diagnostic]
Definition
a nondisplaced fracture involving one fracture line that does not require extensive treatment to repair (e.g., hairline Fx, stress Fx, or crack)
Term
complex fracture
[diagnostic]
Definition
a displaced fracture that requires manipulation or surgery to repair
Term
fracture line
[diagnostic]
Definition
line made by broken bone (e.g., oblique, spiral, or transverse)
Term
comminuted fracture
[diagnostic]
Definition
broken in many little pieces
Term
greenstick fracture
[diagnostic]
Definition
bending and incomplete break of a bone--most often seen in children
Term
herniated disk or disc
[diagnostic]
Definition
protrusion of a degenerated or fragmented intervertebral disk so that the nucleus pulposus protrudes, causing compression on the nerve root
Term
myeloma
[diagnostic]
Definition
bone marrow tumor
Term
myositis
[diagnostic]
Definition
inflammation of muscle
Term
myoma
[diagnostic]
Definition
muscle tumor
Term
leiomyoma
[diagnostic]
Definition
smooth muscle tumor
Term
leimyosarcoma
[diagnostic]
Definition
malignant smooth muscle tumor
Term
rhabdomyoma
[diagnostic]
Definition
skeletal muscle tumor
Term
rhabdomyosarcoma
[diagnostic]
Definition
malignant skeletal muscle tumor
Term
muscular dystrophy
[diagnostic]
Definition
a category of genetically transmitted diseases characterized by progressive atrophy of skeletal muscles (Duchenne's type is most common)
Term
osteoma
[diagnostic]
Definition
bone tumor
Term
osteosarcoma
[diagnostic]
Definition
type of malignant bone tumor
Term
osteomalacia
[diagnostic]
Definition
disease marked by softening of the bone caused by calcium and vitamin D deficiency
Term
rickets
[diagnostic]
Definition
osteomalacia in children (causes bone deformity)
Term
osteomyelitis
[diagnostic]
Definition
infection of bone and bone marrow causing inflammation
Term
osteoporosis
[diagnostic]
Definition
condition of decreased bone density and increased porosity, causing bones to become brittle and liable to fracture (porosis = passage)
Term
kyphosis
[diagnostic - spinal curvatures]
Definition
abnormal posterior curvature of the thoracic spine (humpback condition)
Term
lordosis
[diagnostic - spinal curvatures]
Definition
abnormal anterior curvature of the lumbar spine (sway-back condition)
Term
scoliosis
[diagnostic - spinal curvatures]
Definition
abnormal lateral curvature of the spine (S-shaped curve)
Term
spondylolisthesis
[diagnostic - spinal curvatures]
Definition
forward slipping of a lumbar vertebra (listhesis = slipping)
Term
spondylosis
[diagnostic]
Definition
stiff, immobile condition of vertebrae due to joint degeneration
Term
sprain
[diagnostic]
Definition
injury to a ligament caused by joint trauma but without joint dislocation or fracture
Term
subluxation
[diagnostic]
Definition
a partial dislocation (luxation = dislocation)
Term
tendinitis
tendonitis
[diagnostic]
Definition
inflammation of a tendon
Term
electromyogram (EMG)
Definition
a neurodiagnostic graphic record of the electrical activity of muscle at rest and during contraction to diagnose neuromusculoskeletal disorders (e.g., muscular dystrophy); usually performed by a neurologist
Term
magnetic resonance imaging (MRI)
Definition
a nonionizing imaging technique using magnetic fields and radiofrequency waves

to visualize anatomical structures--useful in orthopedics to detect joint, tendon, and vertebral disk disorders
Term
nuclear medicine
Definition
ionizing imaging technique using radioactive isotopes
Term
bone scan
Definition
radionuclide image of bone tissue to detect tumor, malignancy, etc.
Term
radiography (x-ray)
Definition
x-ray imaging; an ionizing technique commonly used in orthopedics to visualize the extremities, ribs, back, shoulders, joints, etc.
Term
arthrogram
Definition
an x-ray of a joint taken after injection of a contrast medium
Term
diskogram
Definition
an x-ray of an intervertebral disk after injection of a contrast medium
Term
dual-energy x-ray absorptiometry (DEXA)
Definition
an x-ray scan that measures bone mineral density of the spine and extremities to diagnose osteoporosis, determine fracture risk, and monitor treatment; classifications of bone mass include normal, osteopenic, or osteoporotic as indicated by a T score (amount of bone mass of the patient compared to that of a normal young adult)
Term
computed tomography (CT)
computed axial tomography (CAT)
Definition
a specialized x-ray procedure producin a series of cross-sectional images that are processed by a computer into a 2-dimensional or 3-dimensional image
Term
sonography
Definition
ultrasound imaging; a nonionizing technique useful in orthopedics to visualize muscles, ligaments, displacements, and dislocations or to guide a therapeutic intervention such as that performed during arthroscopy
Term
amputation
Definition
partial or complete removal of a limb; AKA, above-knee amputation; BKA, below-knee amputation
Term
arthrocentesis
Definition
puncture for aspiration of a joint
Term
arthrodesis
Definition
binding or fusing of joint surfaces
Term
arthroplasty
Definition
repair or reconstruction of a joint
Term
arthroscopy
Definition
procedure using an arthroscope to examine, diagnose, and repair a joint from within
Term
bone grafting
Definition
transplantation of a piece of bone from one site to another to repair a skeletal defect
Term
bursectomy
Definition
excision of a bursa
Term
myoplasty
Definition
repair of muscle
Term
open reduction, internal fixation (ORIF) of a fracture
Definition
internal surgical repair of a fracture by bringing bones back into alignment and fixing them into place, often utilizing plates, screws, pins, etc.
Term
osteoplasty
Definition
repair of bone
Term
osteotomy
Definition
an incision into bone
Term
spondylosyndesis
Definition
spinal fusion
Term
tenotomy
Definition
division by incision of a tendon to repair a deformity caused by shortening of a muscle
Term
closed reduction, external fixation of a fracture
Definition
external manipulation of a fracture to regain alignment along with application of an external device to protect and hold the bone in place while healing
Term
casting
Definition
use of a stiff, solid dressing around a limb or other body part to immobilize it during healing
Term
splinting
Definition
use of a rigid device to immobilize or restrain a broken bone or injured body part; provides less support than a cast, but can be adjusted easier to accommodate for swelling from an injury
Term
traction (Tx)
Definition
application of a pulling force to fractured bone or dislocated joint to maintain proper position during healing
Term
closed reduction, percutaneous fixation of a fracture
Definition
external manipulation of a fracture to regain alignment, followed by insertion of one or more pins through the skin to maintain position--often includes use of an external device called a fixator to keep the fracture immobilized during healing
Term
orthosis
Definition
use of an orthopedic appliance to maintain a bone's position or provide limb support (e.g., back, knee, or wrist brace)
Term
physical therapy (PT)
Definition
treatment to rehabilitate patients disabled by illness or injury, involving many different modalities (methods), such as exercise, hydrotherapy, diathermy, and ultrasound
Term
prosthesis
Definition
an artificial replacement for a diseased or missing body part such as a hip, joint, or limb
Term
analgesic
Definition
a drug that relives pain
Term
narcotic
Definition
a potent analgesic that has addictive properties
Term
anti-inflammatory
Definition
a drug that reduces inflammation
Term
antipyretic
Definition
a drug that relieves fever
Term
nonsteroidal anti-inflammatory drug (NSAID)
Definition
a group of drugs with analgesic, anti-inflammatory, and antipyretic properties (e.g., ibuprofen, aspirin) commonly used to treat arthritis
Term
A
Definition
anterior
Term
AKA
Definition
above-knee amputation
Term
AP
Definition
anterior-posterior
Term
BKA
Definition
below-knee amputation
Term
CAT
Definition
computed axial tomography
Term
CT
Definition
computed tomography
Term
DEXA
Definition
dual-energy x-ray absorptiometry
Term
DJD
Definition
degenerative joint disease
Term
EMG
Definition
electromyogram
Term
Fx
Definition
fracture
Term
MRI
Definition
magnetic resonance imaging
Term
NSAID
Definition
nonsteroidal anti-inflammatory drug
Term
OA
Definition
osteoarthritis
Term
ORIF
Definition
open reduction, internal fixation
Term
P
Definition
posterior
Term
PT
Definition
physical therapy
Term
RA
Definition
rheumatoid arthritis
Term
ROM
Definition
range of motion
Term
Tx
Definition
traction
Term
x-ray
Definition
radiography
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