Former Hibs captain James McPake will undergo surgery on Tuesday after tests showed he had fractured a kneecap.
The Dundee centre-back was carried off after injuring himself when attempting to block a John Rankin shot during his side’s 2-1 derby win over Dundee United on Saturday.
Manager Paul Hartley confirmed after the game the 31-year-old’s season was over amid suspicions that his kneecap was dislocated.
McPake will need to wait until after his operation to discover the likely length of his lay-off.
A Dundee statement read: “James went straight to hospital and following a scan today the club can confirm that he has suffered a fractured kneecap and will undergo surgery tomorrow.
“Following the surgery we will have a clearer picture of timescales for rehab.
“We would like to acknowledge the professionalism from both sets of players during the derby match on Saturday who immediately helped when it was clear James was in significant pain.
“James is a vital part of Dundee Football Club and we wish him a speedy recovery.”