Digit Amputation, PIJ Arthrodesis Flashcards Preview

RUSVM Large Animal Surgery > Digit Amputation, PIJ Arthrodesis > Flashcards

Flashcards in Digit Amputation, PIJ Arthrodesis Deck (22)
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1
Q

What is the prognosis for this cow?

A

Not good

She’s missing a foot. That’s not ideal.

2
Q

Digit amputation can be used as a treatment for:

A
  • Septic coffin joint
  • Infection of P2 or P3
  • Fracture of P2 or P3
  • Injury or sepsis distal to P1
3
Q

For digit amputation in cattle, a tourniquet is applied on middle of metacarpus/metatarsus and an IV block is performed. How long can you leave the tourniquet on?

A

~2 hours

  • You must leave the tourniquet on in order to keep anesthesia localized around the digit and control hemorrhage!*
  • Padding under the tourniquet can prevent neurapraxia*
4
Q

T/F: After digit amputation and skin flap suturing, it is important to place the pressure bandage after removing the tourniquet

A

False

It is important to place the pressure bandage before removing the tourniquet

5
Q

T/F: Using an open technique for digit amputation, the area is left open to heal by 2nd intention

A

True

However, it is bandaged, just not sutured

6
Q

T/F: In cattle, digit amputation is less successful if done on the medial digit of the thoracic limb or lateral digit of the pelvic limb

A

True

7
Q

What is the average survival time for cattle post-amputation?

A

2 years

Some cattle never recover due to rapid breakdown of supporting structures (Disruption of soft tissues, Cruciate ligaments, interdigital ligaments, flexor tendons)

8
Q

Digit amputation is generally not a good option if ________ digit or ________ digit because those are the digits that carry the most weight

A

Digit amputation is generally not a good option if lateral hind digit or medial front digit because those are the digits that carry the most weight

9
Q

Name the structures involved in septic DIJ in cattle:

A
  • P3, P2
  • Navicular bursa/bone
  • DDFT/sheath
  • PIJ
10
Q

What is the average amount of time that passes before a cow with DIJ septic arthritis presents with clinical signs?

A

4.4 weeks

Ranges from 1 day - 24 weeks

11
Q

What are the clinical signs associated with septic arthritis of DIJ in cattle?

A

swelling, draining tract, laceration, puncture

12
Q

What is the lay term for arthritis/osteoarthritis of the pastern joint?

A

high ring bone

13
Q

What is the lay term for arthritis/osteoarthritis of the coffin joint?

A

low ring bone

14
Q

T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a poor prognosis for soundness, regardless of treatment

A

False

15
Q

T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a good prognosis for soundness with conservative treatment

A

False

16
Q

T/F: Horses with severe high articular ringbone (pastern degenerative joint disease) have a good prognosis for soundness following pastern arthrodesis

A

True

17
Q

Name a few reasons for pastern arthrodesis:

A
  • High ring bone
  • Luxation of the pastern
  • Fracture second phalanx
  • Septic arthritis of the pastern
18
Q

What are the two main principles of PIP arthrodesis?

A
  • Removal of all articular cartilage
  • Maintenance of rigid stability in the joint
19
Q

What is the most common surgical technique for pastern arthrodesis?

A

Combination of trans-articular lag screws and dorsal plate (DCP or LCP)

  • Benefits of using a combination of the two:
    • ​Enhanced stability
    • Improved comfort post op
    • Shorter time in a cast
    • Shorter return to function
    • Shorter hospitalization time
    • Less peri-articular new bone formation on dorsal aspect
20
Q

Surgical puncture of a bone is termed:

A

osteostixis

21
Q

What procedure is being performed here?

A

arthrodesis of proximal interphalangeal joint

The arrows in the picture are pointing to transected collateral ligaments

22
Q

T/F: In general the prognosis for return to full use after arthrodesis of the proximal interphalangeal joint is better for the forelimb than the hindlimb

A

False

In general the prognosis for return to full use after arthrodesis of the proximal interphalangeal joint is better for the hindlimb than the forelimb