Bone Spavin, P1, Splint Bone, Proximal Sesamoid Fractures Flashcards Preview

RUSVM Large Animal Surgery > Bone Spavin, P1, Splint Bone, Proximal Sesamoid Fractures > Flashcards

Flashcards in Bone Spavin, P1, Splint Bone, Proximal Sesamoid Fractures Deck (25):
1

What is bone spavin?

DJD of distal tarsal and TMT joint

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2

What term is used to describe the stance of this horse?

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sickle-hocked

3

T/F: MRI can be as good as arthroscopy for detecting subchondral lesions

True

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4

What are the medical management options for bone spavin?

  • Intra-articular injections of corticosteroids and chondroprotectives
  • Phenylbutazone
  • Exercise

Medical management might be disappointing and lameness may persist in 25-50% of horses

5

How does laser-facilitated ankylosis work?

Destroys cartilage by superheating and vaporizing synovial fluid

6

When drilling for P1 fractures, the most proximal screw must be within ____ of the sagittal groove

5 mm

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7

This horse has an incomplete fracture of P1. What is the recommended treatment?

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Lag screw or cast only + strict stall rest

8

T/F: Many splint bone fractures can be treated successfully with rest

True

9

T/F: Fetlock arthrodesis is considered a salvage procedure

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True

10

Diagnosis?

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Fractured splint bone

11

Fracture of the middle aspect of the splint bone:

  • Are usually treated via removal of the fractured bone under general anesthesia
  • Usually result from external trauma and most commonly affect metacarpal IV and metatarsal IV
  • May cause suspensory dermitis
  • Often cause swelling of the MT region and do not require a nerve block for definitive diagnosis
  • All of the above

All of the above​

12

In cases of splint bone fracture, if you're removing residual distal splint bone, it is important not to remove more than the distal 2/3 of the splint bone.

What is the exception?

Metatarsal IV

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13

T/F: Proliferative periostitis is most common in older horses

False

Proliferative periostitis is most common in young horses

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14

T/F: Splint exostosis is the result of straining and tearing of the interosseous ligament connecting the splint bone to the cannon bone

True

15

T/F: Splint bone fractures are caused by hyperextension of the fetlock or external trauma

True

16

__________ ligament connects the splint bone to the cannon bone

interosseous

Ligamentous injury results in desmitis and periostitis

17

T/F: With appropriate treatment the prognosis for returning to racing with bucked shins is good

True

18

This injury on the 3rd metacarpus is most commonly seen in which patient

  • 2-wk old foal that has been running after its dam
  • A yearling cold that has been castrated
  • 2 yr old race horse in training
  • A 8 year old mare QH used for barrel racing
  • None of the above

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2 yr old race horse in training

(Image is of a bucked shin)

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19

How do you reduce the incidence of bucked shins?

regular short distance breezing and less long distance galloping

20

T/F: Osteostixis is recommended for unicortical fractures of the splint bone

False

Osteostixis is recommended for unicortical fractures of the cannon bone ​

21

VI represents a ________ fracture of the proximal sesamoid bones

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comminuted

22

III represents a ________ fracture of the proximal sesamoid bones

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Base

23

I represents a ________ fracture of the proximal sesamoid bones

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Apical

24

V represents a ________ fracture of the proximal sesamoid bones

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Sagittal (Axial)

25

__________ are the most common fractures of the proximal sesamoid bones

Apical fractures

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