Penrith’s injury curse shows no signs of abating with Peter Wallace to have surgery on a knee problem and fears Jamal Idris and Elijah Taylor may have suffered long-term NRL injuries.

Wallace missed the Panthers’s first win in a month, 22-12 over Manly on Saturday night, with an ongoing knee complaint he had operated on last year.

He will go under the knife again on Tuesday with coach Ivan Cleary saying he will up to six weeks.

There were initial fears Idris had suffered a season-ending ACL injury but he will go for scans on Monday that will better determine the extent of the injury.

Taylor has suffered a cartilage problem and will also undergo scans on Monday.

Both players suffered the injuries in the second half of the round six win, that snapped a three-game losing streak, and didn’t return to the action.

Wallace was a late withdrawal before the four-tries-to-two win.

“Pete is going to go in for surgery on Tuesday, it is a cartilage thing he has been having trouble for the whole season pretty much on the back of his reconstruction and he got another jam in it the other week,” Cleary said.

“It has worn him down, it just got too bad, but the good news is that once he has that surgery he won’t have the ongoing troubles that he has had because he has pretty much been playing busted the whole year.

“It is a testament to his toughness, hopefully it will get him to a point when it is functioning properly

“It is about four to six weeks so it is similar to when Sowie (Jamie Soward – back surgery) is going to be back.”

Cleary didn’t want to speculate on the worst case scenarios for Idris and Taylor.

“We have a couple of scans to wait for ET and Jamal is the same, all we can do is cross our fingers,” he said.

“They were talking about Jamal maybe going back on so I’m not going to say too much, we will just see what happens

The injury dramas weren’t all one way with Brett Stewart (groin) pulling out for Manly pre-game and Tom Trbojevic suffering a suspected serious ankle injury and Jesse Sene-Lefao also leaving the field in the first half with a shoulder complaint.

Neither player returned to the game as bottom-of-the-ladder Manly slumped to their fourth successive loss.

Toovey said Stewart and captain Jamie Lyon are likely to miss another week.

Trbojevic and Sene-Lefao will be sent for scans on Monday.