Mike Green made his first appearance on the ice since Feb. 27 at Philadelphia on Friday morning, when he worked out alone prior to the start of the Capitals’ full team practice. Green, 27, has missed six of the past eight games with a groin injury. Earlier this week the Capitals placed him on injured reserve, though he is eligible to return to the lineup at any time. While Coach Adam Oates said it was a positive sign to see Green on the ice, it’s difficult to gauge his progress at this point because it’s all but impossible to test groin injuries in practice. “I think he felt pretty good. I’ll find out later from [head athletic trainer Greg Smith] after he ices down and all that and how he feels the next day,” Oates said. “You think it’s healed but then as soon as you get real contact [it acts up again]. You can replicate as much as you want but until you get into a game in the heat of the moment and take an unguarded hit, you don’t know.”