Apologies, I was hoping to get this onme finished last night but it ended up taking a lot longer than expected.

A bit NSFW due to amputation but he's alright in the end!

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The potent regenerative abilities of trolls are widely known and feared, but when it comes to giving birth, these abilities prove a hindrance, as the birth canal will aggressively heal itself shut. As such, troll fetuses have evolved a single overdeveloped claw with which to self-caesarean themselves into the world. This is harmless to the troll mother, and the newborn troll sheds the cumbersome bone claw at around four months of age.

Blades fashioned from these discarded claws are among the sharpest and most useless of weapons, as it is almost impossible to kill anyone with them. Through some unknown property, they avoid organs, nerves and neatly seal arteries. Body parts removed by them remain alive for hours (or indefinitely if appropriately preserved) and can even be reattached or replaced by a skilled surgeon.

The blades have given rise to thriving, back alley meat markets where surgeons ply their trade. The merchandise is supplied by monster hunters or by veterans nearing the end of their careers who might sell a skilled sword hand to earn their retirement. Buyers are usually impatient, wannabe adventurers looking to circumvent years of training with

just a quick graft.

Caveat emptor applies, as the surgeons have few scruples and are infamous for promising dragonhide to naive adventurers, while serving up cheap koboldskin.