Which tool is used to determine if a wall crack is the cause of lameness?

• A. Hoof testers
• B. Ruler
• C. Thermometer
• D. Magnifying glass

Answer: (A)

Focus here is on a tool that directly tests for pain in the hoof to pinpoint the source of lameness. Hoof testers work by applying controlled pressure to the hoof wall and sole. If the wall crack or surrounding tissue is painful, the animal will show discomfort or withdraw, indicating that the crack is likely contributing to the lameness. The other tools don’t provoke hoof pain to localize the problem: a ruler only measures size, a thermometer gauges temperature, and a magnifying glass helps inspection but doesn’t test for pain. So, hoof testers are the best choice for determining if a wall crack is the cause of lameness.