The 21-year-old defender injured his knee in the penultimate round of the damallsvenskan, against Vittsjö, last weekend and has been examined with a magnetic camera during the week.
The examination confirms that the anterior cruciate ligament on the left knee is off.
The rehabilitation period is estimated to be up to twelve months.
This is the second time in her career that she pulls the cruciate ligament.
"This is extremely sad for Maja, and we hope she will have surgery soon so she can start the journey back.
I know that she will manage it again this time ", says Stefan Ärnsved, coach of Kif Örebro, to the club's website.
15th serious injury this year
It is noteworthy that Regnås is the third player in Kif Örebro to injure the cruciate ligament this season.
Cajsa Åkerberg and Heidi Kollanen have previously been forced into rehabilitation.
In total, it is the 15th serious knee injury in this year's edition of Damallsvenskan.
"This is our third cruciate ligament injury this year and several other teams have seen the same pattern.
It will be necessary to have a screening of this damallsvenska season to see why there have been so many cruciate ligament injuries this year. ”
Kif Örebro ends the season at home against Piteå on Sunday.