ECC Biomechanics & Movement Analysis 3

Question 1

Which of the following best describes 'impulsion' in equine movement from a biomechanical standpoint?

Accepted Answer

The desire to move forward combined with engagement and thrust from the hindquarters

Answer

Impulsion is the biomechanical and neuromuscular quality of hindquarter engagement, thrust, and forward energy — not merely speed.

Question 2

A horse displaying a 'stabbing' forelimb action where the hoof contacts the ground toe-first is most likely compensating for pain in which region?

Accepted Answer

Palmar foot structures or navicular apparatus

Answer

Toe-first landing is a classic compensation for palmar foot pain (e.g., navicular syndrome), where the horse avoids heel-first impact to reduce pressure on sensitive caudal foot structures.

Question 3

What does 'over-track' measure during gait analysis and what is its clinical significance?

Accepted Answer

How far the hindfoot lands ahead of the forefoot print, indicating hindlimb engagement and lumbar mobility

Answer

Over-track quantifies how far ahead of the ipsilateral forehoof print the hindhoof lands, serving as a practical measure of hindlimb engagement and thoracolumbar flexibility.

Question 4

The 'swinging' (oscillating) motion of the equine head and neck during the walk primarily serves which biomechanical function?

Accepted Answer

Acts as a pendulum counterbalancing thoracolumbar rotation and aids forelimb protraction

Answer

The pendulum-like head and neck oscillation during the walk counterbalances spinal rotation and actively assists forelimb protraction through inertial coupling.

Question 5

When performing a dynamic flexion assessment at the trot, a positive response is characterized by:

Accepted Answer

Worsening of lameness (increased asymmetry) during the first 4–8 trot strides after flexion

Answer

A positive flexion test shows exacerbated lameness (increased head nod or hip hike) during the first several trot strides after releasing the flexed limb.

(ECC) Equine Chiropractic Certification Practice Test

(ECC) Equine Chiropractic Certification Practice Test

ECC Biomechanics & Movement Analysis 3