Northampton striker Alex Nicholls is recovering in hospital after suffering a double fracture of his left leg on Saturday.
Nicholls underwent surgery in the evening and the League Two club have said that the operation was a success.
Nichols sustained the injury scoring the opening goal when he was on the receiving end of a late lunge from John McCombe, which earned the stand-in Port Vale captain a straight red card.
"Alex Nicholls is recovering well in hospital after suffering a broken fibia and tibia," said a statement released by Northampton. "He underwent surgery on Saturday evening to have an intramedullary nail inserted into his tibia, and that operation was a success.
"He may need a skin graft later this week, but the doctors will need to assess the wound before deciding how to proceed.
"We would like to thank supporters of all clubs for their kind messages towards Alex that have been posted on our official Facebook page, we will make sure they are passed on to Alex."