Sydney Roosters players Ian Henderson and Dale Copley sustained injuries in the Club's Round 3 match against the North Queensland Cowboys last Thursday night.
Ian Henderson fractured both bones in his lower right leg in the 79th minute of the match.
Henderson has undergone surgery and an update on his anticipated recovery time will be provided once his rehabilitation program commences.
Scans have confirmed that Dale Copley suffered a tear to his left pectoral muscle in the first half of the match.
Copley will undergo surgery this week and it is anticipated that he will be unavailable for selection for three to four months.