BOSTON — There’s a procedure in the NHL for a player coming back from a concussion: The doctors put it off as long as necessary, and the coaches keep it quiet as long as possible.

So it was with Bruins forward Patrice Bergeron yesterday, when he returned for his first full practice since a May 6 concussion that kept him out of Game 1 of the Eastern Conference finals. Boston coach Claude Julien would not comment on Bergeron’s availability for Game 2 tonight against the Tampa Bay Lightning.

Bergeron, who has had one more limited workout, skated on his own yesterday with general manager Peter Chiarelli watching, and then took part in non-contact power play and penalty-killing drills with his teammates.