Lecture 28 - Pelvic Limb 5 Flashcards
What are the comparative differences in the fibula for horses, pigs, and ruminants
horses have great variation as it is vestigial
pigs have a complete separate fibula
ruminants have a distal fibula that forms separate lateral malleolus
list the crus muscle groups craniolaterally
cranial tibial m.
fibularis tertius
fibularis longus
soleus
long digital extensor
lateral digital extensor
the cunean tendon belongs to which muscle
fibularis tertius
describe the reciprocal apparatus
SDFT and fibularis tertius
moves with stifle
what does a “stringhalt” gait look like?
exaggerated upward flexion of pelvic limb
what is the anatomy of the stringhalt surgical procedure?
lateral digital extensor myotenectomy via two incisions above and below the hock
differentiate and name tarsal joints
tarsocrural
proximal intertarsal
distal intertarsal
tarsometatarsal
what is the physical examination finding of a fibularis tertius rupture?
hock extended while stifle is flexed
where is a common site for OCD in the tarsus?
distal intermediate ridge of the tibia (DIRT)
what joints does bone spavin commonly affect?
intertarsal and tarsometatarsal joints
differentiate and name the tarsal synovial sacs and pouches
Synovial sac: Tarsocrural, proximal intertarsal, distal intertarsal, tarsometatarsal
Pouches: dorsolateral, dorsomedial, plantarolateral, plantaromedial
which joints of the tarsus communicate?
free communication of all pouches
tarsocrural and PITJ - ox and horse
TMTJ and DITJ - free communication
local anesthetic injected into one joint sac may go to what other joint sac (if any)
tarsocrural to PITJ
TMTJ to DITJ
what joint does bog spavin occur in
tarsocrural joint
describe the needle insertion landmark needed to perform an injection into the tarsometatarsal joint
head of MT4
why are the dorsomedial and plantarolateral tarsocrural joint pouches commonly used for injection sites
they are easily accessed and communicate freely with all pouches
the fibularis longus m. is absent in this species
horse
this species has one patella ligament
pig
the fibularis tertius is part of the
reciprocal apparatus
stringhalt involves abnormal function of this muscle
lateral digital extensor m.
the cunean tendon is the dorsomedial insertion of this muscle
cranial tibial
the patella locks over this trochlear ridge of the femur
medial
the meniscofemoral ligament connects this meniscus to the femur
lateral
why may the fibular be incorrectly classified as fractured on radiographs
proximal part is not ossified
what is the action of the craniolateral crus muscles
flex tarsus and extend digits
T/F: there is a union of the lateral digital extensor and long digital extensor in the mid-crus
TRUE
list the crus muscle groups caudally
popliteus
SDFT
DDFT
gastrocnemius
the cunean bursa sits between what two structures
cunean tendon and medial collateral ligament
what is the action of the caudal crus muscles
extend tarsus and flex digits
what is a species difference in the tarsus of swine
4 metatarsals
no fused tarsal bones
what is a species difference in the tarsus of bovine
fused III and IV metatarsals
fused central + IV and II + III tarsals
what is a species difference in the tarsus of equine
3rd metatarsal (splint bones II and IV)
fused I + II tarsals
