Exam 2: Bone Spavin and P1 Fractures Flashcards Preview

RUSVM LASx PRACTICE QUESTIONS > Exam 2: Bone Spavin and P1 Fractures > Flashcards

Flashcards in Exam 2: Bone Spavin and P1 Fractures Deck (39)
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1

The layterm for DJD of the distal intertarsal (DIT) and

tarsometatarsal (TMT) joints.

It is a common cause of hindlimb lameness in the horse

Bone Spavin

2

The hock joint is made up of 4 joint spaces.

Name them from proximal to distal:

Proximal to distal:

Tibiotarsal

PIT

DIT

TMT

3

The _______ aspect of the joint

is the most common place to see Bone Spavin

medial

4

Poor conformation predisposed to

______________

Osteoarthritis

5

What are two examples of poor conformation that

can predispose for osteoarthritis in the equine?

Sickle hocked

Cow hocked

6

The conformation where the back leg joints of a horse

are set with too much angle,

resulting in the hock also being excessively angled.

This can result in uneven hoof wear,

and eventually osteoarthritis

SICKLE-hocked

7

The conformation in an equine where the

back 'knee' is set inward,

resulting in a splayed look in the back legs.

This can result in the uneven wearing of hooves,

and eventually osteoarthritis

COW-hocked

8

Out of the 4 joints that make up the hock,

which 2 joints always communicate?

Tibiotarsal and PIT

(the most proximal joints)

9

What do you expect to see on rads

of an animal with bone spavin?

Osteophyte formation

10

What bone is the arrow pointing to?

Central tarsal bone

11

What grade is this bone spavin?

Grade 1

 

small osteophyte distolateral central tarsal bone 

12

What bone is this arrow pointing to?

 

What grade is this bone spavin?

MT3 (3rd metatarsal bone)

Grade 2

Small osteophyte proximal dorsolateral MT3

13

What bone is this arrow pointing to?

 

What grade is this bone spavin?

Central Tarsal Bone

Grade 3

 

medium osteophyte distomedial central tarsal bone

14

What bone is this arrow pointing to?

 

What grade is this bone spavin?

MT3 bone

Grade 4

 

large osteophyte proximal dorsolateral MT3 bone

15

What are the causes of bone spavin?

Chronic repetitive compression

Torsion

Shear strains

16

What type of horses are bone spavins

most common in?

WESTERN performance horses

17

This test is a specific for hock lameness,

if the horse FLEXES and ABDUCTS the leg. 

 

Digital pressure should also be applied

to the area of the cunean  bursa in search of sensitivity. 

Church Hill Hock Test

18

Describe how to perform a spavin test

1. The horse is trotted to determine the degree of lameness

2. The lame proximal hind leg is flexed for 90 seconds

3. The horse is trotted again to see if lameness has worsened

 

If the horse's lameness is worsened = Positive Spavin Test

19

What is going on in this image?

Spavin Test

 

Proximal hind limb flexion

20

How is bone spavin diagnosed?

Lameness evaluation: Church Hill Test, Spavin Test

Advanced imaging: Nuclear Scintigraphy, MRI, CT

21

What type of advanced imaging would be

best to use to detect a

cortical bone disease or stress fracture?

Nuclear scintigraphy

22

What type of advanced imaging would be

best to use to detail

soft and hard tissues in joints,

and is as good as arthroscopy for detecting

subchondral lesions?

MRI

23

What choices for conservative medical management

are available in the treatment of bone spavin?

IA injections- corticosteroids, chondroprotex, auto anti-inflamms

Phenylbutazone

Exercise adaptation

Corrective shoeing

24

What are your surgical options for treatment

of bone spavin (osteoarthritis)?

Cunean Tenectomy

Ankylosis (of TMT and DIT)

Transarticular Drilling

Laser-Facilitated Ankylosis

Ethyl Alcohol Facilitate Ankylosis

Monoiodoacetate

25

What is the success rate for cunean tenectomy

in the treatment of bone spavin in horses?

83%

26

Transarticular Drilling is a method in which to treat bone spavin.

3 divergent drill tracts at 30 degree angles are created

medially, distal to the cunean tendon.

Post-Op= Phenylbutazone

The average time required for the horse to

return to soundness after this procedure is

__________ months

7.5 months

27

Using an Nd:YAG or Diode laser,

Laser Facilitated Ankylosis

destroys cartilage by

superheating and vaporizing __________

synovial fluid

28

Laser Facilitated Ankylosis

promotes _______ ankylosis,

and there is significantly less fusion of

the __________ joints as compared to other methods

Laser Facilitated Ankylosis

promotes partial ankylosis,

and there is significantly less fusion of

the distal tarsal joints as compared to other methods

29

In regards to Ethyl Alcohol Facilitated Ankylosis:

Lameness resolved in _____% of horses with bone spavin

within _______ months

In regards to Ethyl Alcohol Facilitated Ankylosis:

Lameness resolved in 86% of horses with bone spavin

within 3 months

30

How does Ethyl Alcohol Facilitated Ankylosis work?

IA injection of 3 mL of 70% Ethyl Alcohol 

into the affected joint

kills off nerve endings and cartilage.

 

Post-px, 2g of Phenylbutazone

Can return to work as soon as 3 days. (can take up to 3m)