Canterbury have lost a second NRL star to injury in as many weeks after prop Dylan Napa was ruled out for up to six weeks with an ankle issue.

Scans on Monday revealed Napa suffered a grade two syndesmosis to his right ankle during Sunday’s NRL loss to Melbourne.

It is the same injury that ruled out five-eighth Kieran Foran for three months last week, leaving the Bulldogs devoid of experience for Sunday’s match against St George Illawarra.