Edwards facing lengthy lay-off
The 21-year-old has missed Wolves' last two matches and had already been withdrawn from the Wales squad for the trip to Azerbaijan before the diagnosis.
Edwards' short career has been blighted by injury and he spent a lengthy spell out of action with a dislocated ankle while on Aston Villa's books.
Concerns about his ankle problems held up his £150,000 summer transfer from Villa to Wolves, but eventually a specialist decided he was fit enough for the move to go ahead.