"Sandra has had surgery before for an anterior cruciate ligament injury in this knee.
In connection with that injury, she also suffered a cartilage injury that has been recalled off and on in recent years," says national team doctor Jakob Swanberg in a press release.
The hope is that Näslund will have time to recover for the World Cup final in Canadian Craigleith next weekend.
Näslund has a streak of 19 straight wins.
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WC gold for Sweden – Sandra Näslund and David Mobärg win the team competition Photo: Bildbyrån