Panthers hooker Apisai Koroisau will be sidelined for an extended period after suffering a broken wrist in the team's Round 1 victory over North Queensland Cowboys.
The 28-year-old Fijian international was replaced early in the second half at Panthers Stadium, with scans later confirming the severity of the injury.
Koroisau has undergone surgery and is expected to be sidelined for at least six weeks.
Mitch Kenny is expected to start at hooker in Saturday's NRL clash against the Bulldogs.
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