Basic Lameness In Horses

Question 1

Grade 1 lameness AAEP Scale

Answer 1

Difficult to observe, inconsistent

Question 2

Grade 2 Lameness AAEP Scale

Answer 2

Difficult to observe at walk/trot going straight but is consistent in circle, incline, hard surface

Question 3

Grade 3 lameness AAEP Scale

Answer 3

Consistently observable

Question 4

Grade 4 lameness AAEP Scale

Answer 4

Marked nodding/hitching/short stride

Question 5

Grade 5 lameness AAEP Scale

Answer 5

Minimal weight bearing, inability to move

Question 6

What are 5 common lameness cues?

Answer 6

1. Head nod: head drops when sound limb is weight bearing ; most useful for forelimb lameness
2. Hind limb: symmetry of gluteal rise (swing phase) and fall (weight bearing)
3. Fetlock drop: joint of the sound limb drops faster during weight bearing
4. Sound: sound is louder when sound limb strikes the ground
5. Drifting: horses drift away from lame hindlimb; tail may also be carried away from the lame limb

Question 7

How do the procedures of a lameness exam differ for a grade 4 -5?

Answer 7

We know that a grade 4-5 lameness is BAD so we’re not going to trot, do flexion tests, or diagnostic analgesia as they may make the injury worse

Question 8

Order of lameness exam for a horse with grade 1-3 lameness

Answer 8

1. History
2. Distant exam
3. Palpation/hoof tester
4. Physical movement
5. Movement (walk/trot)
6. Movement after manipulations (flexion tests)
7. Diagnostic analgesia
8. Imaging
9. Diagnosis
10. Management and follow up