Mavericks lose 5th straight; how concerned should we be about the injuries?

The Mavs were a top 4 seed in the West on Christmas, but a series of injuries to Luka, Kyrie and others have derailed their spot in the standings. They've lost five straight after dropping a game to Memphis last night, and given all the injuries, it might not stop any time soon. How concerned are you for the season with how things have been going lately?