What structures are involved with pedal osteitis?

• A. Navicular bone and coffin joint
• B. Frog tissue and laminar tissue
• C. Lamina and digital cushion
• D. Solar corium, P3

Answer: (D)

Pedal osteitis is primarily inflammation of the coffin bone (P3) and is typically linked to lesions in the solar region. The solar corium is the tissue just under the sole that interfaces with P3, and chronic injury or infection at the solar surface can involve both the bone and this corium. That’s why the structures involved are the solar corium and P3. The other choices point to soft tissues or other bones not characteristically implicated in pedal osteitis, such as the navicular bone or the coffin joint, which aren’t the primary sites affected in this condition.