Manly Warringah Sea Eagles forward Jack Gosiewski today underwent surgery on a broken right arm suffered in last night's loss to Nth Qld Cowboys at Lottoland.

Gosiewski will be sidelined for the next six weeks with the injury.

Meanwhile, the Sea Eagles medical staff will continue to monitor winger Jorge Taufua and back-rower Shaun Lane in line with NRL concussion protocol ahead of next Saturday's home game against the Warriors in Christchurch.

Sea Eagles Casualty Ward

Taniela Paseka (ankle) – Rd 14

Dylan Walker (facial fracture) – Rd 18

Kelepi Tanginoa (knee) – Rd 18

Jack Gosiewski (arm) - Round 19

Lachlan Croker (knee) – season

Curtis Sironen (knee) – season