Myr - Grafting of an obsidian prosthesis

From my personal project of Myr:
Despite of interests, the obsidian prosthesis grafting remained, as in its first days, a difficult operation.
Full attention and consciousness necessary to ensure the bonds of the flesh.

Here's a link to the related article for more:
https://sites.google.com/view/myr-worldbuilding/myr/alchimie-organique#h.pfxt585tou7u