If the injury will take a rest of the season for recovery, then good as the resting period is long. The Lakers can make playoffs even without Anthony Davis and that's for sure. Anyways, AD will undergo MRI on Monday so that's the only time we can speculate at least the most scenarios that the Lakers will face.
But even without AD, the Lakers still have the best bunch of good players in the league even on their bench.
Kahwi Leonard, Paul George, Kevin Durant, etc. these injuries struck some of the superstars. Hope they will be all healthy in the playoffs.
They now have Gasol Montrezl Harrell, these 2 can certainly contribute during the playoffs too. Davis just make the team better but they are still a playoff team or even a championship contender without him. However, if Davis is not available in the playoffs, I might go with the Clippers to win the WCF or even the NBA Finals.