13 - Plates Flashcards
2 types of screws
Cortical and cancellous - locking screw is third
which screw wil be the most commonly used one in vet med
cortical scew
does an appositional screw compress the gaps
no
does a leg screw compress the gaps
yes
when choosing plate size, ensure you choose
max size and length
DCP
dynamic compression platw
LC - DCP
limited contact dynamic compression plate
load sharing
bone and implants sharing the forces transmitted across the fracture site by weight bearing
fractures thatr are amenable to compression are limited to
transverse and short oblique fractures
what are teh key concepts in applying bone plates
appropriate plate size, spans the bone for diaphyseal fractures, contours
waht is the minimum of screws
3 or secure 6 cortices above and below the fracture
if a pateint load is less than the frictional force the construct is
stable
if patient load exceeds the frictional force the construct is
unstables
one plate can do what 3 functinos
compression, neutralizaiton and bridging
which plate provides absolute stability
compression plate and protecetion / neutralizaiton plate
which plate provides realitve stability
bridging plate
compresion by DCP, the screws are placed where
away from the fracture site
protection plates provide
neutralization
protection plates resist
torsion, bending, and shear forces
bridge plate
restores length, rotation and angulation
