Standing is one of the big no-nos, and has been for a while. I'll not sell the P-bass, ever, even if I don't use it. Bass uke...Hmmm, will check some out.
Much appreciated, everyone. I do hope that they can do something. The main problem is that other surgeries have removed the curve in my lumbar spine, which means I'm falling forward all the time. As there's not much left of the lower back muscles after 5 dissections, it's very difficult and painful to stay upright, despite lots of core work. One of the struts, as it were, is simply not there. If they can bang some titanium cages into the gaps where discs once were, well and good, they might be able to restore some of the curve. But this means breaking apart a fusion that melds L2 to L5. It's a big, delicate job. And it might leave me paralysed, like any back surgery. But nothing to lose, what, because that's the end game anyhow.
Sinsonido...hmmm.