Grand National-winning jockey David Mullins expects to be back in action in the three to four weeks once his broken collar bone has healed.

The 20-year-old had a plate inserted at St Vincent’s Hospital, Dublin, on Thursday morning.

He suffered a broken collar bone and a collapsed lung in a fall at the fourth-last flight on Erlkonig in the McHale Coranna Handicap Hurdle at Ballinrobe over a week ago.

“I’ll be back in three or four weeks from now, well before Galway,” said Mullins.

“They put a plate in the collar bone and they’ve done an X-ray on my punctured lung and that’s all clear.

“I should be back as soon as the collar bone heals.”

Mullins enjoyed his finest hour in the saddle to date when partnering the Mouse Morris-trained Rule The World to victory in the world’s greatest steeplechase at Aintree in April.