Lomax has sustained a broken thumb and the Dragons announced Lachlan Maranta will come into the team in jersey No.22 as his replacement.

It also raises a huge question of who will kick goals for the Dragons, with Jai Field on the bench, leaving Ben Hunt or Corey Norman as the likely options.

Maranta played 70 games for Brisbane between 2012 and 2016, but hasn't played in the NRL since, joining the Dragons this year after a stint in rugby union.

While Corey Norman returned from a cheekbone injury to steer the Dragons to a 36-12 win over Canterbury, snapping a five game losing streak, the club has struggled with a number of missing personnel this year.

Tyson Frizell and Korbin Sims has spent time on the sidelines, while captain Gareth Widdop will not return from a shoulder injury until at least round 20.

The Dragons said a timeline for Lomax's return is yet to be confirmed.

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