Huddersfield Town captain Peter Clarke is likely to be out for around four weeks after being booked in for a double hernia operation.
The defender has sat out the Terriers' last two matches in League One and the club have opted to have the injury fixed sooner rather than later.
Clarke has made 22 appearances for the promotion chasers this season and manager Lee Clark expects the 30-year-old to return in peak condition.
"On Tuesday, Peter will go into the operating theatre for the same operation that Gary Roberts had recently - a double hernia," Clark told the club's official website.
"In today's terms it's not a big procedure - they are quite common procedures in modern day football.
"Knowing Peter as I do, I imagine he will be back in three or four weeks and with the situation with the Stevenage game he could only miss three or four games.
"We could have kept Peter playing by giving him jabs, but he would need the procedure eventually and further down the line there was a chance he could miss five or six games and so we feel this is the best time to do it.
"When he does come back, he'll be back to 100%."