Debuchy was carried off on a stretcher in the 13th minute, clutching his right shoulder after falling heavily following a collision with Stoke's Marko Arnautovic.
"He has to see a specialist then we see where we go from there. A dislocated shoulder can take a while," Wenger told Sky Sports.
Frenchman Debuchy, who signed from Newcastle United in July, has already missed three months of the season following a serious ankle injury suffered against Manchester City in September.
(Reporting by Tom Hayward and Michael Hann; editing by Justin Palmer and Ian Chadband)
Share
