It's still a saw for bone and not all surgeons have robotic stuff. Probably most do but at Mcbride I don't think they do.My knees were cut with a robotic machine. They don't use saws and chisels like the old day. It's more like jigs and bone saws, LOL. The nerve blocks I received, one went into the hamstring. The needle is roughly 5-6 inches long and they pretty much fish for the nerve while you are awake. They give you fentanyl to not make it too uncomfortable, but I thought it was very uncomfortable on my first TKR. They want you to relax and not tense up while they do it.