The Tayside derby has come at a significant cost for St Johnstone.
On top of the three points lost, Craig Thomson has fractured his collar bone and will be out for the season, while Chris Millar and Murray Davidson also sustained injuries.
The recovery period for young winger Thomson has yet to be determined, but manager Tommy Wright confirmed yesterday that his 2015/16 campaign was over.
The Perth boss has yet to see a replay of the incident that caused the serious injury for his second half substitute, thought to involve Dundee United midfielder Paul Paton.
But his post-match reaction was: “OK, it was a fair tackle on Craig Thomson but he’s followed through and he is looking at a fractured shoulder.”
On the other two injuries, Wright added: “Midge took a knock on his hip a similar type of problem to what he’s had.
“Muzz has done his hamstring.”
Meanwhile, Wright wasn’t pinning the blame on goalkeeper Alan Mannus, who let Ryan Dow’s shot squeeze past him for the only goal of Saturday’s game.
He said: “There were a few mistakes before it got to the shot from Dow.
“Alan was on the move and it hit his side as he landed on it. It was similar to the one that hit the crossbar and he landed on in the cup final, which didn’t go in. Maybe luck was paying us back there.
“Alan has been magnificent for us. He’ll be disappointed with it but I can understand why it happened.”