AFL Women's Fremantle defender and Olympic javelin thrower, Kim Mickle has been dealt a cruel blow, with scans confirming she has a ruptured anterior cruciate ligament.

Mickle sustained the injury during the second quarter of the Dockers' loss to Brisbane on the weekend.

“I didn’t expect this to be a major injury at all, but you win some and you lose some, and now I just want to look ahead to what my options are and determine a course of action for my recovery,” Mickle said.

Mickle, 32, won gold at the 2014 Commonwealth Games in Glasgow and competed at the recent Rio Olympic Games.

Meanwhile, fellow Docker, Brianna Green, will also miss the rest of the season after she sustained a broken collarbone during Sunday's match.