Chapter 15 - pathology/terminology Flashcards
(101 cards)
dislocation (luxation)
the bone is displaced from a joint
subluxation
a partial dislocation
nursemaid’s elbow (jerked elbow)
partial dislocation of the radial head of a child
apposition
the manner in which the fragmented ends of the bone make contact with each other
name the three types of apposition
anatomic apposition, lack of apposition, & bayonet apposition
anatomic apposition
end of the fragments make end-to-end contact
lack of apposition (distraction)
ends of a fragments are aligned but are not making contact with each other
bayonet apposition
the fragments overlap and the shafts make contact but not at the fracture ends.
angulation
loss of alignment of the fracture (apex is the direction of the angulation)
name three types of angulation
apex angulation, varus deformity, valgus deformity
what is apex angulation
describes the direction of the apex
what is varus deformity
the distal fragment ends are angled toward the midline of the body and results in a lateral apex that points away from the midline
what is valgus deformity
opposite of varus: the distal fragment ends are angled away from the midline and the apex is pointed toward the midline
inversion
varus
eversion
valgus
simple (closed) fracture
bone does not break through the skin
compound (open) fracture
portion of the bone protrudes through the skin
incomplete (partial) fracture
the fracture does not traverse through entire bone
two types of incomplete fracture
torus & greenstick
torus fracture
buckle of the cortex (outer portion of the bone) is characterized by localized expansion or torus of the cortex with little or no displacement
greenstick fracture (hickory or willow stick fx)
fracture is only on one side. the cortex on one side of the bone is broken and the other side is bent
complete fracture
the break is complete
name three types of complete fractures
transverse, oblique, & spiral
transverse fracture
fracture is transverse at a near right angle to the long axis of the bone