Everything in Vinny Lecavalier’s rehab from back spasms was going along OK until he tried skating in Dallas Saturday.

Before the Flyers’ 5-1 loss to the Stars, the 33-year-old center took to the ice and throughout the day his back tightened up. An X-ray in Dallas revealed something that looked a little off so the team flew Lecavalier back to Philadelphia instead of Ottawa, where the Flyers will play the Senators Monday night. An MRI there revealed a non-displaced fracture in his lower back. He will be out 3-4 more weeks, according to general manager Paul Holmgren.

“We’re gonna treat it when we can aggressively with rehab,” Holmgren said on a conference call. “Right now, he has to rest for a few days and get some of the discomfort out. We will go from there.”

Lecavalier had missed the last three games with the back spasms, which first kicked up in the first leg of the six-game roadtrip, in Nashville last Saturday.