Toronto Maple Leafs fans got another frustrating update on veteran defenseman Brandon Carlo and the team's blue line health, as Brandon Carlo will miss significant time following foot surgery and a recovery setback.

Carlo, acquired from the Bruins at last season's trade deadline, has not played since November 13 due to a foot issue and lower-body struggles that worsened during his rehab.

The Maple Leafs confirmed he underwent surgery on December 3 and is now sidelined indefinitely, with no firm return date yet set.

The 29-year-old defenseman was averaging just over 20 minutes per game in 18 outings this season, anchoring Toronto's right side before the injury. His absence leaves a big hole in the top four and pressures the entire defensive corps to compensate.

Maple Leafs coach Craig Berube told reporters Carlo's return isn't on the immediate horizon, emphasizing the team will take the time needed to get him back correctly rather than rush the process.

The long layoff effectively pushes his total time off ice toward eight weeks or more.

Leafs' Back End Struggles Without Carlo

Beyond Carlo's injury, Toronto's defense has been dealt additional blows this month. Chris Tanev remains out with an upper-body injury suffered in early November and his timeline is still uncertain as the team evaluates whether surgery could be part of his path back.

Meanwhile, Oliver Ekman-Larsson left a recent game with a lower-body concern, though there are signs he may avoid a lengthy absence if he can skate and feel out his status at practice.

Into this mix, waiver pickup Troy Stecher has stepped in and delivered steady minutes on the right side, providing Toronto with a reliable depth boost when they needed it.

The Maple Leafs' defensive depth continues to be tested, and with key veterans sidelined, Toronto must rely on role players and youngsters to hold the fort until their stars can return.