Hurn injured his ankle midway through the first quarter against the Hawks and played no further part in the game.
Eagles coach John Worsfold admitted after Friday night's game he was concerned Hurn would not recover in time for the crucial clash against the Bombers.
"When you take a bloke out of a game that early with an ankle, it's not a good sign usually," Worsfold said.
"They've obviously iced it and kept him off it, but they've got to work out what he's done, that's the main thing."
Worsfold said the Eagles' six-day turnaround before the Essendon clash would also work against Hurn.
"He'll get scans over the weekend, so we'll … put him on crutches and assess what the injury is," he said.
In better news for the Eagles, Worsfold said he was hopeful Scott Selwood would play against the Bombers after playing out Friday night's game with a hand/wrist injury, while there were "no real concerns" about Nic Naitanui following the accidental head knock he copped from Lance Franklin in the second quarter.
Forward Mark LeCras returned after a two-week break, which included the Eagles' round 11 clash against St Kilda and the bye, on Friday night.
LeCras broke his arm in round one this year and missed just one match before returning, but Worsfold conceded he was still playing in some discomfort.
"His arm is not 100 per cent, but he's not too bad," Worsfold said.
Friday night's loss saw the Eagles slip from ninth to 10th on the ladder.
Although they remain just percentage behind eighth-placed Carlton, the pre-season premiership fancies now face a tough month that includes the Bombers, Adelaide (AAMI Stadium), Fremantle and the Sydney Swans (Patersons Stadium).
However, Worsfold said West Coast's performance against the Hawks gave it a platform to build on for the coming month and the rest of the season.
"We've got to beat the good teams in the competition, so we were looking forward to the test against Hawthorn and I thought the boys stood up to the test without winning the game," Worsfold said.
"We took some steps forward in how we want to play, and we look forward to taking that up to every other team we play."
Asked to specify those areas of improvement against the Hawks, Worsfold identified his team's intensity, ball use, pressure around the football and ball movement from the back half.
Nick Bowen is a reporter with AFL.com.au. Follow him on Twitter: @AFL_Nick
