The Sydney Roosters squad has been assessed by Club medical staff following Saturday's Round 3 match against the South Sydney Rabbitohs.
Scans have confirmed that Luke Keary has sustained an ACL injury. The Club is consulting specialists to determine the best course of treatment.
Lindsay Collins was taken from the field in the second half of the match for a Head Injury Assessment (HIA) and was unable to return to the field. He has commenced the NRL's HIA protocol.
Scans have confirmed that Lachlan Lam has sustained a moderate MCL injury to his left knee. The rehabilitation period is expected to be six weeks.
Victor Radley is set to return to the matchday squad after suffering a minor shoulder injury late last week.
There were no other injury concerns for the remaining players that featured in the match.