Hearts have added two more names to their already-lengthy injury list ahead of Tuesday's visit of St Johnstone to Tynecastle.
Midfielder Scott Robinson has been ruled out for the remainder of the season after being told he needs surgery on a serious knee injury.
Defender Dylan McGowan limped out of Saturday's 2-1 defeat to Motherwell and will also sit out the clash against Saints.
Danny Grainger, Marius Zaliukas, Callum Patterson and Jamie Hamill remain long-term absentees as caretaker-manager Gary Locke attempts to guide Hearts to their first win in seven matches.
St Johnstone are able to welcome back defender Callum Davidson to their squad after his recovery from illness.
Midfielder Murray Davidson is in line for a recall after completing a suspension as Saints look for a win which would take them into third place in the SPL.
Worthington, 51, was confirmed on Monday as successor to Gary Mills, who was sacked after Saturday's home defeat to Bradford, and has appointed former Bury goalkeeper coach Barber and York's youth-team boss Torpey to work alongside him.
"Fred has been with me since Blackpool," said Worthington. "When he was at Bolton he used to come in for a couple of afternoons a week and take the keepers.
"Then I had Fred with me for four and a half years at Northern Ireland. He brings fantastic knowledge and experience to that position and is somebody that works the keepers extremely hard, which I like.
"If you look at (Jussi) Jaaskelainen, ex-Bolton now at West Ham, Fred had a huge part to play in the achievements he's made, so there's a lot of quality there and a lot of football experience, which is good to have alongside you.
"And Steve has been at the club for a number of years.
"He's got local knowledge and knows the players inside out and it was right that we moved him up alongside us.
"It's good experience for him as well and gives him the opportunity of seeing what it's like at the top end. He's a good lad, I've been very impressed with what I've seen so far."
Barber has taken up his new role with Worthington after leaving the Shakers, who he joined at the start of this season.
Bury manager Kevin Blackwell told the club's official website: "I'd like to thank Fred for his time and effort and that he has put into Bury FC, and for the help and assistance that he has given me while I've been here. We all wish him the very best for the future."
