FOXBOROUGH, Mass. -- In each of the last two seasons, one of the constants for the New England Patriots has been Joe Thuney’s presence at left guard.

Thuney, a 2016 third-round draft choice out of NC State, has been the definition of a plug-and-play starter, coming off the field for just four snaps as a rookie and only five last year, which was usually because the game was in hand and it was a chance to get his backup some work.

But such a workload hasn’t come without a personal toll.

While the affable Thuney has been present at the Patriots’ voluntary offseason program this year, his participation has been limited as he prepares for upcoming foot surgery, according to those familiar with his situation. The procedure that Thuney is scheduled to undergo on his foot isn’t considered anything that should threaten his availability for the 2018 season, but naturally will keep him off the field for upcoming organized team activities.

Thus, it highlights the importance for the team to have quality depth in case things take an unexpected turn.

Joe Thuney, a dependable contributor at left guard the past two seasons, will have foot surgery this spring. He's not expected to miss any of the 2018 season. Timothy T. Ludwig/USA TODAY Sports

Along those lines, here are some of the factors in play: