The match against Tranmere was Krafth's first start of the season, but it ended in a nightmare for the Swede.
"I will be out for several months with a knee injury.
I'm devastated that I can't be out there helping the team but I'll do my best to push the boys to success, he writes on Instagram.
Krafth writes that he will work hard to get back on the field.
"I will work extremely hard to get back as soon as possible," he says.
On Twitter, the club wishes Emil Krafth a speedy recovery.