Walker requires surgery to both his anterior cruciate ligament and lateral ligament.
He'll use part of his own hamstring for his ACL reconstruction, but will rely on a donor for the lateral ligament.
"I’m actually going to get an allograft for my lateral ligament which I’ve torn as well, so someone that’s passed away, I get a ligament from them," Walker confirmed on Triple M Adelaide on Friday night.
Walker is not the first footballer to use the technique.
It is understood at least one other AFL player has used a donor ligament in the past.
Winter Olympic gold medalist Alisa Camplin also used the procedure.
Walker sustained the season-ending knee injury in Adelaide's round five loss to Carlton.
