What is the softest part of the claw capsule?

• A. White line
• B. Laminitis
• C. Intercellular cement
• D. Sand cracks

Answer: (A)

The main idea is that different parts of the claw capsule have varying hardness, and the junction between the wall and the sole is the softest region. This white line is where the horn tissue is least keratinized and more flexible, making it the weakest point under pressure and a common site for separation and lesions. Laminitis involves the laminae supporting the claw and is not about a soft spot in the capsule; intercellular cement is a component within horn tissue, not a distinct soft region; sand cracks are cracks in the wall itself, which is typically tougher than the white line. So the softest part of the claw capsule is the white line.