The federal court has sacked the board of the South West Aboriginal Medical Service, nine days after finding it had engaged in "oppressive conduct" by dismissing members and a director.
The court released its final orders on Thursday with Judge Craig Colvin saying all member positions of the SWAMS board must be vacated.
SWAMS member Donna Turvey told National Indigenous Times the outcome was a victory for the community.
"We won," she said. "12 months of fighting a board that has been oppressive and unfair, tried to dismiss all of our Elders, and tried to bring down our medical service. We refused to have that happen to us."
SWAMS has more than 1,200 members in the south west of Western Australia.
The court's decision is the culmination of a long period of turmoil.
In June, members and Elders held a protest in the lobby of the SWAMS headquarters in Bunbury, calling for the dismissal of SWAMS chair Philip Ugle and director Ernie Hill.
Lead plaintiff and director Lesley Ugle took legal action after the health service expelled her and 20 members.
Judge Colvin ordered an election of a new board would be held at an annual general meeting on April 23, and that the expulsion notices be declared invalid.
The AGM will chaired by independent court-appointed lawyer Craig Sanderson.
