Bone Spavin

Question 1

prognosis following drill ankylosis for bone spavin

Answer 1

60-85% return to soundness in on avg. 7.5 months

Question 2

pro of chemical ankylosis using 70% ethanol to treat bone spavin

Answer 2

can IMMEDIATELY return to work

Question 3

old school surgical treatment option for bone spavin is ______ and has a prognosis of _______

Answer 3

cunean tenectomy

prognosis 83%

Question 4

G.S. surgical option for treating bone spavin

Answer 4

chemical ankylosis with 70% ethanol

NEVER use MIA for chemical ankylosis

Question 5

where might you see osteophytes in bone spavin cases

Answer 5

• distoLATERAL (early sign) and distoMEDIAL (later sign) on central tarsal bone
• proximal dorsoLATERAL MTIII

Question 6

drill vs. laser ankylosis for bone spavin

Answer 6

laser is less pain but less fusion of distal tarsal joints

Question 7

post op mechanical drill ankylosis for bone spavin

Answer 7

• bandage 2 wks
• hand walking 2 wks
• light riding 1 month

Question 8

difference between bone spavin and bog spavin

Answer 8

bone spavin: DJD of distal intersaral joint and tarso metatarsal joint on MEDIAL aspect. NO effusion or distension usually

bog spavin: DJD of tarsocrural joint and is marked by joint effusion and distension

Question 9

treatment for bone spavin

Answer 9

conservative: injections (steroids, HA, IRAP, PRP), phenylbutazone, exercise adaptation, corrective shoeing

surgical:

• cunean tenectomy: old school option; prognosis 83%
• ankylosis: mechanical vs. chemical (70% ethanol)

Question 10

EARLY sign of bone spacin

Answer 10

small osteophyte on distoLATERAL central tarsal bone

Question 11

predisposing factor for bone spavin

Answer 11

conformation (sickle hocked, camped under, cow hocked)

common in western performance horses

Question 12

what to remember when doing chemical ankylosis using 70% ethanol to treat bone spavin?

Answer 12

MUST be done with contrast rad guidance to ensure no unexpected joint communication

Question 13

bog spavin

Answer 13

DJD of TARSOCRURAL joint and is marked by joint EFFUSION/DISTENSION

Question 14

bone spavin

Answer 14

DJD of distal intertarsal joint and tarsometatarsal joint on MEDIAL aspect; may have hard enlargement due to osteophytes but generally no joint effusion or distension

Question 15

cause of bone spavin

Answer 15

chronic repetitive use (compression, torsion, sheer strain)

predisposing factor: conformation (sickle hocked, camped under, cow hocked)

Question 16

diagnosis of bone spavin

Answer 16

• **proximal limb flexion test/Spavin test for 90 secs (stresses hock, stifle, and hip)
• nuclear scintigraphy: sensitive but NOT specific
• MRI
• CT