Chainsaws are often seen as the choice of weapon in grizzly horror films or commonly seen in a lumberjack's toolkit.
But the loud power tool has quite the history away from Leatherface and chopping down trees.
Its reason for invention may just make you squirm – especially if you are a woman.
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Over on TikTok, people are only just realising what chainsaws were originally used for.
A woman posted a clip where she said: "Point of view: you record yourself before and after finding out why chainsaws were invented."
Her face looked visibly disturbed after searching the history of the chainsaw, and it's safe to say many others were shocked at the teethed tool's use too.
The bone-cutting device dates back to the 18th century – but it was not for torture or felling wood.
Surprisingly, the chainsaw was originally for childbirth.
Yes, you read that right.
Giving birth is not the most comfortable experience nowadays – but women in the 1700s had it a lot worse.
Without the presence of modern medicine, birth could get very dangerous for the baby and mum.
If a baby was breech back in the day then doctors would have to widen the pelvic area by cutting into the cartilage and bone.
However, Scottish doctors John Aitken and James Jeffray realised that using a knife to do this was not efficient enough.
In what seems like something out of a gory film, the pair invented the chainsaw to aid with childbirth.
Medically known as a 'symphysiotomy', the outdated procedure involved removing bone and cartilage to clear obstruction to make room for the baby to deliver from the birth canal.
Despite what you may be thinking, the doctors did not use the chainsaw we are all familiar with today – but it still looks rather brutish.
The original chainsaw appeared to be a knife with a chain mechanism attached that was operated using a turning handle.
Thanks to the introduction of caesarean sections, symphysiotomies are no longer widely used on pregnant women.
Sadly, women would experience a barrage of different complications after having their pelvis widened. These included difficulty walking and risks of infection.
"Right like imagine being a woman back then", the woman in the TikTok clip fretted.
Equally as horrified, many people fled to the comments to share their thoughts on the medical chainsaw.
One person commented: "No because I thought it was for torture and it is WORSE."
Another user gasped: "Ouch. I should not have looked that up."
While a third voiced: "Why am I not surprised."
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