Injury scans have proved inconclusive for Raiders star Shaun Fensom.
The Canberra Raiders insist they're better prepared than before to cope with life without Shaun Fensom after rallying in his absence against Souths.
With star back-rower Josh Papalii (ankle syndesmosis) sidelined until least round six, the likely loss of Fensom is another savage blow to Canberra's back row in the lead up to Saturday's clash at Penrith.
Injury scans proved inconclusive and the 25-year-old was referred to a specialist to assess the damage late on Monday afternoon.
How long he will be out of action will be known on Tuesday morning, but the Raiders will be praying one of their key players avoids a long stint on the sideline.
Canberra has a poor recent record without Fensom, having lost seven of the past nine games he's missed through injury or suspension.
Fensom left the field in clear distress after landing awkwardly on his elbow late in the first half against the Rabbitohs, and played no further part in the match.
"I heard a big loud crack and a pop, that rattled me a bit,'' Fensom said on Monday morning.
"I was facing down on my arm, and I could see it happen.
"It was fairly painful, it looks like it subluxed and came out, then popped back in.
"When you see something on telly and you have to turn away, when you see it happen to yourself [it's worse].
"It didn't feel too bad this morning, I stayed up last night and iced it."
Fensom's absence was sorely felt in the 24-12 round three home loss to Gold Coast.
Regular prop Paul Vaughan deputised ably against the Titans and is likely to shift to the No.13 jersey against the Panthers.
Given Canberra played five props against Souths, coach Ricky Stuart has the option of bringing in a back-rower or a prop to replace Vaughan.
Matt McIlwrick and Jake Foster, who has scored four tries for undefeated NSW Cup affiliate Mounties, are back row options.
Former representative prop Tom Learoyd-Lahrs made his return from an ankle injury for Mounties on Saturday, and may come into the reckoning.
Raiders skipper Terry Campese is adamant they're better prepared to handle Fensom's loss after the courageous Souths win.
Having also lost back-rower Joel Edwards (concussion) early in the second half, the rest of the pack dug deep to grind out victory.
"We knew Shaun wasn't on the field and he does those 1 per centers, that's why he's one of the best players in the comp, in my eyes,'' Campese said.
"Without him, Edwards and Papa [Papalii], three of our best defenders, we had to pick up the workload between us and the team responded."