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.