The forward played 3:47 in a 3-1 loss to the Montreal Canadiens on Thursday before leaving the game and did not return.
"I don't have an exact time period, but we don't expect him back here for a while," Sabres coach Ralph Krueger said Saturday before Buffalo's 2-1 overtime victory against the Columbus Blue Jackets. "I'd say it's more in the weeks category. We'll probably confirm that later … but I just don't expect him here in the near future but also not the very long future, so it's between that."
Okposo missed 10 games from Nov 17-Dec. 7 because of a concussion, but Krueger said this injury is unrelated.
"It's below the neck and above the waist," Krueger said.
Okposo has 12 points (five goals, seven assists) in 40 games this season.
With their victory Saturday, the Sabres (23-22-7) are eight points behind the Toronto Maple Leafs for the second wild card into the Stanley Cup Playoffs from the Eastern Conference.
