According to the text, what medical condition did the doctor's nephew have, and what steps were taken to treat it before seeking Sai Baba's help?

The source material for Chapter 34 explains that the nephew of a doctor from Malegaon had a disease called a bone-cyst, also known as Hadyavarn. This was described as a most difficult and extraordinary malady. The text explicitly states that numerous treatments were attempted without success. The nephew's uncle was a physician himself, and he along with his expert and intelligent surgeon friends tried various native and foreign treatments, including surgery. However, all their efforts were exhausted and they felt helpless before turning to Sai Baba.