As difficult as it may be to pronounce, it has been the equine health issue on most lips this spring.

And it enters the vernacular again on Saturday with the reappearance of classy mare King's Rose in the Group Two Gilgai Stakes (1200m) at Flemington.

Epiglottic entrapment is a condition occuring in a horse's throat that is usually rectified by a fairly routine procedure, but can occasionally bring about the end of a horse's racing career.

Already this spring it has disrupted the preparation of multiple Group One winner Mosheen and the weight-for-age winner Glass Harmonium underwent a procedure to rectify the condition before he resumed last week.

King's Rose is the latest high-profile horse to be affected by the condition which vets say occurs in hundreds of racehorses each year.

In the case of King's Rose, the treatment has been a total success and trainer Peter Moody hopes the mare will have as spectacular a spring campaign as she did last year when she won two Group Two races and was runner-up in the Group One Toorak Handicap and Group One Emirates Stakes.

"She's been working and trialling extremely well at home," Moody said.

"But I thought the race might look a bit sit and sprint and she might be left behind."

Moody will also run the Stradbroke Handicap winner Mid Summer Music in the Gilgai which is dominated by the shortest-priced favourite on the Flemington card, Bel Sprinter.