Brady will be out of action for around four weeks after opting to have surgery to correct a long-standing hernia problem.
The club's head of medical services Rob Price said Brady had conceded it was worth having the operation as soon as possible.
Price told the Tigers' official website: "It's actually a condition that we've been managing for around six weeks now.
"Robbie has managed to play through that and been particularly successful despite being in a reasonable amount of pain.
"We had a sit-down between Robbie, the manager and myself to make a decision on when it would be best to have the surgery and Robbie decided that he couldn't really continue to play with the pain he was having."
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