Sidney Crosby was bloodied after being struck in the face by a puck shot by Islanders defenseman Dylan Reese. The Pittsburgh captain, playing in the ninth game of his second comeback of the season after recovering from concussion symptoms, was hit 1:43 into the second period. Crosby stayed down on his stomach for about a minute before gathering himself and getting back up on his skates. He then skated off toward the tunnel leading to the dressing room. He returned to the bench with 10:13 left in the period, and was back on the ice moments later.

Sabres defenseman Christian Ehrhoff is out indefinitely after hurting his left knee, according to an ESPN.com report. Coach Lindy Ruff wouldn't put a timetable on his recovery Wednesday, except to say Ehrhoff will "miss some time."

Canucks coach Alain Vigneault confirmed what most already suspected Monday, when he said Daniel Sedin suffered a concussion on an elbow from Blackhawks defenseman Duncan Keith. "Daniel obviously, as everyone knows, has got a concussion and we're following the protocol," Vigneault said after his team's morning skate, ignoring the fact no one else from the Canucks said so since Wednesday's hit, which resulted in a five-game suspension for Keith. As for Sedin's timeline for a possible return, Vigneault didn't sound like he'd have updates anytime soon: "I'm not going to address this every day. He's got a concussion and when we've got something more to say, we'll say it."

Rangers forward Mats Zuccarello fractured his left wrist when he was struck by a puck in the first period of New York's game against the Buffalo Sabres on Friday night. There were no other updates, and the Rangers said Zuccarello would be out indefinitely.

The Maple Leafs announced Thursday that two forwards have been recalled on an emergency basis from the Marlies (AHL). Nazem Kadri and Marlies captain Ryan Hamilton joined the Maple Leafs in New Jersey today. Matt Frattin (lower body) and Clarke MacArthur (upper body) are listed by the team as day-to-day with injuries. Hamilton is second in team scoring with 46 points in 65 AHL games. The native of Oshawa, Ontario leads the club with 23 goals and 10 power-play goals and he will be looking to make his NHL debut when the Maple Leafs face the Devils on the road Friday. Kadri has 13 goals and 19 assists in 42 games in 2011-12 with the Marlies. He has four goals and two assists in 19 games for the Maple Leafs this season.

Stars defenseman Mark Fistric, who was injured in Tuesday's win over Phoenix, is expected to miss at least one week with an abdominal strain. "It will be a week or so for sure, and then after that it will be day to day," coach Glen Gulutzan said Thursday.

Blackhawks captain Jonathan Toews will miss his 12th consecutive game on Friday against the Stars as he continues to recover from a reported concussion, according to coach Joel Quenneville. Toews skated "a bit" on Wednesday, but he did not join his teammates for Thursday's practice.

X-rays on Patrice Bergeron's left leg, injured while blocking a shot Sunday against the Penguins, came back negative, and the Bruins center is a game-time decision for Tuesday's game against the Lightning. Bergeron left Sunday's game after taking a slap shot from Matt Niskanen near his left knee.

Sabres fourth-line forward Matt Ellis is out indefinitely after hurting his knee last weekend. Without calling the injury season-ending, coach Lindy Ruff said Ellis will miss an extended period as Buffalo prepared to host Montreal on Monday night. Ellis was hurt in a win at Ottawa on Saturday.

Penguins captain Sidney Crosby participated in his first full practice since concussion-like symptoms resurfaced in December and there is optimism he'll be back before the playoffs. Crosby insists there still is no timetable on when he'll be cleared to play in a game, but he looked crisp while spending more than an hour on the Consol Energy Center ice. "It's a good step," Crosby said. "Hopefully, I can keep the momentum and get out there soon."