Borussia Dortmund defender Erik Durm undergoes knee surgery

Borussia Dortmund full-back Erik Durm faces another long spell on the sidelines after undergoing knee surgery on Wednesday.

Dortmund did not announce how long Durm, 24, will be out of action but reports in the German media indicate that the full-back is likely to be absent for several months.

He wrote on Instagram: "All went well, and only looking ahead from now on!"

Alles gut gegangen und ab jetzt nur noch nach vorne schauen ����

A photo posted by Erik Durm (@_erik37durm) on

Durm has appeared in only 32 of a possible 68 Bundesliga games due to injury issues since his surprise inclusion in Germany's 2014 World Cup squad.

After making 18 league starts for BVB in the 2014-2015 season, Durm missed the entire first half the following term with knee problems that required surgery. Following his comeback after the winter break, he played in 20 games in all competitions but only started in 13.

During the summer, Durm nurtured an injury in his other knee that limited him to individual training for the majority of preseason.

On Wednesday afternoon, BVB announced on Twitter that the full-back, who has also been used in midfield, had to undergo another operation to remove inflamed tissue from his right knee.

Meanwhile, kicker has reported that Germany international Marco Reus is set to return to team training next week following the adductor injury that ruled him out of the Euro 2016.

Dortmund had earlier said that Reus would resume team training in mid-August and, speaking to kicker, Michael Zorc said of the minor delay: "Marco does not want to start too early. A few days won't matter."

Kicker added that Reus could be back with the Dortmund squad by the end of September.