Bone spavin Flashcards
(42 cards)
T/F: bone spavin is relatively uncommon, while OA of the talocalcaneal joint is common
false
bone spavin is a common cause of ____ lameness (location)
hindlimb
what diagnostic test would you do first with bone spavin
radiographs
what is the second diagnostic test you would do with bone spavin
nuclear scan or MRI
what is bone spavin
degenerative joint disease of the distal intertarsal and tarsometatarsal joints
what joints are involved in bone spavin
DIT and TMT
what side of the joint is involved with bone spavin
medial
what can you see if the bone spavin is significant enough
osteophyte formation
what causes bone spavin
compression and rotation of distal tarsal bones, poor conformation, and incomplete ossification, crushing of cuboidal bones
what does poor conformation predispose to
OA
sickle hock conformation
distal limb is more cranial compared to hock (should be straight line down from hip, to hock, to back of leg, to ground)
camped under conformation
aka sickle hock
hindlimb more cranial, should be caudal
cannon bone is not perpendicular to ground
what relation to ground should the cannon bone be
perpendicular
cow hocked conformation
external rotation of distal hindlimbs
+/-valgus
what is the spavin test
proximal limb flexion, then trotting
if +, lameness will increasewh
where do you hold for a proximal limb flexion test
the hoof
what joints are being tested in a spavin test
hock, stifle, hip
benefit of nuclear scintigraphy
not specific, but good when you cannot localize, or lameness overt/unblockable
details cortical bone disease and stress fractures
benefit of MRI
sensitive and specific for hard and soft tissue in joints
good for subchondral bone
disadvantage of nuc. scin in foals
physis lights up like a Christmas tree indicating “pathology” when it is actually normal growth plates
what is the most common treatment done with bone spavin
medical (conservative)
35-70% of lameness improvement was seen in bone spavin with which route of tx
intraarticular
what is the surgical procedure to treat bone spavin
ankylosis
what does medical management entail for bone spavin
IA injections, phenylbutazone, exercise adaptation, corrective shoeing
