For example, my neighbor wrecked his bicycle a few months ago. His doctors decided he needed a couple implants to help his leg bones grow back together optimally. I went over to look for my supposedly-delivered package this evening. He's recovering, slowly. Today he was hobbling around with a cane, and told of going to all the rehabilitation he can get (physical therapy, etc). I don't have formal medical training, but I think the rod in his leg was a reasonable intervention.
Trauma surgeons do amazing work in keeping people alive who in prior centuries rapidly expired from similar injuries.
I don't think modern medicine does well with multi-factorial conditions that develop over long periods of time.
Cancer will be a much smaller business when someone figures out how to put it in a more appropriate context, rather than treat it with the tired old war metaphor.