Charlton midfielder Bradley Pritchard faces a long spell on the sidelines after fracturing a metatarsal bone in his foot.
The 25-year-old, who has made five appearances this season after joining from non-league Hayes & Yeading, has fractured a metatarsal.
"We envisage missing him for a number of weeks," manager Chris Powell confirmed.
"It's a real shame for Bradley. He's been outstanding since he walked through the door and he has a great attitude for someone who has been in full-time football for only three months.
"He's one of those people who wants to grasp his opportunity. But he will come again and I'm sure he will have a part to play this season."
Meanwhile, young Charlton goalkeeper Nick Pope has extended his loan spell at Harrow Borough for another month.