Dr. Mateo Herrera believed in bones. Not in the abstract, poetic way—he didn’t see them as the scaffolding of the soul. He saw them as levers, pulleys, and problem-solved fractures. For thirty years, he had operated out of a small clinic in Granada, his hands more honest than his words. His bible was an old, worn-out copy of “Manual Avanzado de Ortopedia y Traumatología” —the 1987 edition. Its spine was held together with medical tape; its pages were stained with coffee, betadine, and the occasional drop of blood.

He went home, took the book from the shelf, and for the first time in thirty years, he wrote in the margins of Chapter 14:

“I think,” he said, “I’m ready to fix something alive.”

That night, alone in his apartment, Mateo sat with el libro de ortopedia open on his lap. He traced a finger over a diagram of the pelvis—the ilium, the ischium, the pubis. They looked like the wings of a broken bird. He remembered his wife, Elena, telling him once: You fix bones because you’re afraid to fix anything alive. Bones don’t talk back.