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Unit 8: Equine Hoof Disorders - Coggle Diagram
Unit 8: Equine Hoof Disorders
conformation
broken back hoof pastern axis
backwards "C-shape" on dorsal aspect of P1 and P3
on rads
angled P2 and P3 (should be straight)
heel line is shorter than 1/2 of the toe ine
P2 more vertical
lamenesses
lone toes
underrun heels
broken forward hoof-pastern axis (club foot)
C-shapred on palmar aspect of P1 and P3
on rads
heel line is much longer than 1/2 of the toe line
P3 more vertical
angle b/w P2 and P3 (should be straight line)
occurs in club footed animals w/ P3 rotation secondary to laminitis
treatment/farrier
cut distal check ligament
treaim widest part of the frog
put heel wedge
move breakover back to balance the foot
rocker shoe
medial lateral imbalance
coronary band is not parallel with the ground
DP view - line running through the vessels is not parallel with the ground
treatment/farrier
trim foot more freq
monitor coronary band
narrow heels/frog
frog width <2/3 length
looks like frog is squished b/w bars of the wall
look for signs of navicular syndrome
treatment/farrier
manage heel pain
trim to widest part of frog
pour-in pad doe the frog
increase show size if needed
underrun heels
heel almost touching ground
heel angle is 5deg fewer (more flat) than toe angle (dorsal hoof wall)
lamenesses
broken back hoof pastern axis
long toes
treatment/farrier
trim heel to widest part of the frog
provide support via shoes
disorders
hoof abscess
common across all ages, sex, breed
risk factors
moist environment
previous laminitis
recent shoeing
flat sole
sole bruise
white line disease
penetrating qound
lamenesses
sudden and severe
non-weightbearing
unilateral
exam findings
hoof tester positive
focal
all-over
black spot on sole
"gravel" (draining tract at coronary band)
warm foot
bounding digital pulse
distal limb swelling
on rads
+/- gas
bone involvement
nerve blocks
improves
abaxial sessamoid
lateral/medial PDN
do unilaterally
treatment
soak and paring to drain
hoof bandage
sole bruises
contusion caused by impact
hemorrhage to colar cornium
aka "corn"
risk factors
shoes
too small
not extending far back enough
outgrown
long-toe/low heel conformation
flat and/or thinned soles
hard/rocky ground
often affects several feet
exam findings
hoof tester postiive, specific area
increased digital pulses
sole discoloration
improves after PDN block
treatment
phenylbutazone (NSAIID)
eliminate shoeing problems
apply caustic agent to toughen the sole
iodine
formalin
apply pad
apply wide-wbbed show to support foot
thrush
bacteria and/or fungus eating at frog area
risk factors
poor sanitation
persistent wet conditions
sole pads
confinement
muddy paddocks
poor conformation
deep frog
sheared heels
lameness may be present if senssitive tissues involved
exam findings
smell
black goo
atrophied frog
deepened sulci
treatment
clean
apply drying agent
kill pathogens
debride damaged tissue
trush buster
foot soaks in chlorine bleach
dry environment
laminitis
acute
disease of adult horses
wide range of causes
can be unilateral or bilateral
exam findings
increased heat near coronary band
pounding digital pulses
hoof tester positive
reluctant to stand on affected foot
sawhorse stance
on rads
changes in angle b/w hoof wall and dorsal surfae of P3
flattening of ledge on top of coronet
treatment
focus on likely pathophysiology
NSAIDs
limit walking
decrease swelling
support the coffin
encourage blood flow
surgery to realign rotated coffin bone
minimize further trauma
chronic
ponies more at risk thanks to...
PPID
insulin resistance
recurrent forelimb lameness
exam findings
dished foot
founder rings
widening of white line on solar surface
changes in position of cofin bone on rads
broken forward hoof pattern axis
chronic pain
chronic abscesses
impoves with palm-digit or base-sessamoid nerve block
treatment same as ac
navicular syndrome
high risk
Quarter horses and their relations
types with small feet
long toes
low heels
