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Vetdle Archive

Archive Case #105: Equine Navicular Syndrome

Horse veterinary case - Easy - June 16, 2026

Clinical Clues

  1. A horse is examined for chronic forelimb lameness affecting both front feet.
  2. The rider says the horse takes short choppy steps and is worse on firm ground.
  3. The horse lands toe first rather than heel first.
  4. Lameness improves after a palmar digital nerve block.
  5. Imaging supports pathology centred on the navicular apparatus.
  6. Chronic pain arising from the navicular region commonly causes bilateral forelimb lameness in horses.

Diagnosis

Equine Navicular Syndrome

This case is most consistent with Equine Navicular Syndrome because the horse has chronic bilateral forefoot pain that improves with a palmar digital block. The most important clues are the toe-first landing and hard-ground lameness, which make a single traumatic injury less likely.

Learning review

Review the case evidence

Use the paired clues to explain how the evidence in this horse case supports the provided diagnosis, Equine Navicular Syndrome, then compare your reasoning with the case explanation.

Evidence checkpoints

Clues 1-2

  1. Clue 1: A horse is examined for chronic forelimb lameness affecting both front feet.
  2. Clue 2: The rider says the horse takes short choppy steps and is worse on firm ground.

Clues 3-4

  1. Clue 3: The horse lands toe first rather than heel first.
  2. Clue 4: Lameness improves after a palmar digital nerve block.

Clues 5-6

  1. Clue 5: Imaging supports pathology centred on the navicular apparatus.
  2. Clue 6: Chronic pain arising from the navicular region commonly causes bilateral forelimb lameness in horses.

Self-review prompts

  1. After clues 1-2, what evidence from this horse case shaped your initial interpretation?
  2. When you compare clues 3-4 with clues 1-2, what changed in your reasoning about Equine Navicular Syndrome?
  3. How do clues 5-6 align with the case explanation for Equine Navicular Syndrome?

Educational Use

Vetdle archive cases are educational veterinary games for diagnostic reasoning practice. They do not provide veterinary advice, diagnosis, treatment, or professional medical guidance.