No one in here knows. Probably 90% of the RS employees don't know.
But as your medical accountant, I feel safe in saying that, if the doctor said he had to have surgery, one of two things could happen:
They go for a second opinion.
They have the surgery.
Once upon a time, I had a torn meniscus. It wasn't a huge issue, and the doctor explained the pros and cons. I declined, and 15 years later, I did have the surgery. In both cases, I feel I made the right decision.
The point being is that not all medical decisions are B&W. The doctor might have given the RS a wide range of options and outcomes.