'Reports have Jagr's injury ranging from a charley horse to a groin pull to a shoulder problem, the latter of which is the current consensus. The Penguins have stood by their "charley horse" evaluation, but there clearly is something more severe. The team likely doesn't want opponents to target any particular area on his body shoud Jagr return, hence the vague injury report.'
Jagr's injured, but how injured is anyone's guess
Source: Washington Observer Reporter