Orthopedic Nurse Certification Exam 2025
update|comprehensive questions and verified
answers (complete solutions) Exam|ASSURED
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Terms in this set (77)
Biological:
1) Age: bone structure becomes less dense/more
susceptible to injury
2) Type of bone involved: some are better equipped
to handle difference stresses and forces without
Name 2 biological, 3 injury
extrinsic, and 1 behavioral
factor that can Extrinsic:
predispose a patient to a 1) Amount of force applied
fracture. 2) Angle of force applied
3) Duration of force
Behavioral:
1) Participating in adrenalin-seeking activities such as
skydiving, rock-climbing, motor cross
1) Cast should be kept dry.
2) Monitor the skin areas at the end of the cast.
Describe nursing 3) Never stick anything into or under the cast to
instructions that may be scratch or itch.
given to a patient in a 4) Alert medical care in case of tightness or
cast. increasing pain, numbness, color change, or
temperature change in areas of distal ends of cast.
5) Follow up if cast gets loose or cracks.
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Typically has two main components:
1) Diaphysis - makes up long shaft of bone. Outer
portion is made of compact bone. Inner layer is
made of marrow.
2) Epiphyses - set at either end of long bone. Outer
What is the basic
layer is compact bone and inner core is spongy
anatomy of a long bone?
bone.
Periosteum - membrane that lines both externally. -
contains supply of nerve fibers, lymph, blood
vessels
1) Tapping - sustained from a small force to a
concentrated area. Bone will absorb this force - may
or may not be mild soft tissue display of injury.
EX: fracture of forearm when blocking a hit with a
fist or bat; being kicked in lower leg
Give examples of tapping
fracture and penetrating 2) Penetrating - caused by large amount of force on
fracture. small area. Object of force is usually small and soft
tissue involvement is minimal.
EX: stab wound, gunshot wound
Different from crush wound because object of force
is much larger.
1) Skeletal maturity decreases healing.
- Immature skeleton increases rate and success of
healing.
2) Single bone fracture has better prognosis than
multi-bone fracture.
List several factor that 3) Big displacement that affect surrounding tissues
determine fracture- requires more healing time.
healing outcome. 4) Thoracic spine injury heals better than unstable
lumbar/cervical spine injuries.
5) Fracture of joint surfaces are more
unstable/difficult to treat.
6) Fracture with nearby unaffected support bone
has good prognosis - acts as natural splint.
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LINEAR: the fracture forms a straight line through
the bone; doesn't tell if fracture line is angled or
horizontal; a linear can be oblique or transverse
OBLIQUE: fracture line that travels at an angle
Differentiate between
through the bone
linear, oblique, and
transverse fractures.
TRANSVERSE: break that travels in a horizontal line
through the bone.
Don't ever just say a fracture line is linear -
differentiate with oblique or transverse.
1) CRUSH - caused by large stress on a small area;
results in multiple break lines and severe soft tissue
damage; EX: sledgehammer coming down on a
finger or heavy suspended mass falling on foot or
leg
Describe/give examples
2) COMPRESSION - happens with large axial
of following bony injuries.
loading force; most often in vertebrae; EX: landing
on feet or butt, fall from a moderate height
3) STRESS - not sustained by one-time incident but
instead with repetitive activity that stresses a normal
bone over time
PLASTER OF PARIS: slightly cheaper, molds well but
is heavier and has longer drying time/setting; not
ideal for kids in an outpatient setting/upper
extremity injury
Differences between FIBERGLASS: more expensive, comes in different
plaster of Paris and colors, molds well, lightweight, drying time is as
fiberglass casting. little as 5 minutes, more water resistant; BUT edges
are more abrasive and they tend to be hotter
How to choose? - cost, physician
comfort/familiarity, joint being immobilized, injury
being treated & patient type
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