How does Chapter 34 describe the healing power of Sai Baba's Udi, especially for problems doctors can't fix?

Chapter 34 of the Shri Sai Satcharitra emphasizes the extraordinary healing power of Udi, presenting it as a remedy for conditions deemed incurable by medical science. The chapter explicitly states that its purpose is to continue describing the glory and characteristics of Udi. It provides a powerful example through the story of a boy with a bone-cyst. The text highlights that after all native and foreign treatments and even surgery failed, the family heard that if the great saint Sai Baba applied Udi with his own hand, 'even incurable diseases perish.' Baba himself confirms this power by giving the family Udi and instructing them to 'smear it on that wound,' presenting it as the definitive solution to a problem that had exhausted all medical experts.