Eintracht Frankfurt have been hit hard with the news of Sasa Kalajdzic's injury during Sunday's match against SC Freiburg, which ended in a 3-3 draw.
Bayern Munich slumped to a 3-2 defeat at Bochum to remain eight points behind leaders Bayer Leverkusen, increasing the pressure on manager Thomas Tuchel.
Stuttgart forward Deniz Undav has been crowned as the Bundesliga's Player of the Month for January.
In a string of setbacks, Bayern Munich's quest for glory has hit a stumbling block, raising concerns over coach Thomas Tuchel's leadership.
Ciro Immobile's second-half penalty earned Lazio a shock 1-0 first-leg win over 10-man Bayern Munich in the Champions League last-16.
Stuttgart have loaned Jovan Milosevic to Swiss top-flight side Saint Gallen.