Oxycodone
"I've had 3 aortic aneurysms. The last operation also involved a patch placed over a surgical hernia caused from removal of the two lower ribs on my left side.  I've been using oxycodone for the past 4 years and aside from insomnia when I take it in the evenings, I am very pleased with the way it controls my pain.  I take it only when I am in pain and limit the dosage to 10 - 20 mgs. (10 mgs per dose, occasionally twice a day).  With this usage, I haven't had dependency or addiction."