bundesliga top goalscorer alexander meier is out for the season .
the eintracht frankfurt striker requires knee surgery .
meier has scored 19 league goals this season , ahead of bayern munich duo arjen robben -lrb- 17 -rrb- and robert lewandowski -lrb- 16 -rrb- .
but robben is also injured which could mean lewandowski securing the accolade for the second consecutive season .