Application (Radiology & Injury) in Thoracic Limb

Question 1

Orthogonal Views

Answer 1

See 3D structure in 2D on radiographs
Need several views to form full picture, understand whats going on

Question 2

Radiopacities of Radiology

Answer 2

1. Air = radiolucent (black)
2. Fat
3. Water/soft tissue
4. Bone
5. Metal = radiopaque (white)

Question 3

Summation

Answer 3

Bone over bone = more radiopaque

Question 4

What injury results in inability to extend the limb?

Answer 4

Brachial plexus avulsion

Question 5

What is involved in atrophy of shoulder muscles?

Answer 5

Injury to suprascapular N
Atrophy of supraspinatus M / infraspinatus M

Question 6

Clinical signs of Elbow Dysplasia

Answer 6

Instability or detachment of anconeal process
Leads to inflammation, eventually OA
Can be bilateral, large breed dogs

Question 7

Types/Signs of Angular Limb Deformities

Answer 7

Carpal valgus: angulation away from midline (outward)
Carpal varus: angulation toward midline (inward)

Question 7

Types/Signs of Angular Limb Deformities

Answer 7

Carpal valgus: angulation away from midline (outward)
Carpal varus: angulation toward midline (inward)

Question 8

What joint is disarticulated in dewclaw removal (amputation of digit)

Answer 8

Metacarpophalangeal joint

Question 9

What is Brachial Plexus Avulsion?

Answer 9

Excessive pulling of thoracic limb, disrupting all nerves originating from it