so broken spine = dead boi?

[Muttley]

His spine got shattered and I haven't found anyone with a robo spine

[pheanox]

You can research bionics now in 1.1 and craft your own bionic spines.

[Gamefever]

There are a 3 spine replacements or at least 2,

Bionic and Aerotech versions I think.

Bionic is in the research tree.

You have to visit spacer locations to find a spine for sale, sometimes its a quest reward but its not common. They are expensive enough to be prohibitive.

[ambi]

dunno if the healer serum is still in 1.1, but if you can get one, it should heal the spine. in 1.0, you get them off quests and exotic traders.

[flu007]

Healer Mech Serum is certainly still in 1.1. That's indeed an option, though I usually keep those for afflictions which can't be cured with bionics.
Since, as mentioned, you can craft a bionic spine (after you researched it,) that is probably the better way - unless, perhaps, you're early game, long way to go until researching bionics, and happen to have a spare healer mech serum. But then I'd probably still consider keeping the colonist in bed for a year until you researched it or come across a trader who sells it.

Edit: as far as I know, there is only a Bionic spine, not an Archotech one.