The 25-year-old went down in a heap after 31 minutes of his side's 3-1 win over Dundee at Dens Park and was stretchered off in clear pain.
Manager Craig Brown described the injury as "serious" in his post-match interviews and it has now been confirmed as a break.
A message on the club's official Twitter feed read: "We have just heard the sad news from the hospital that Andrew Considine's injury has been confirmed as a broken leg.
"Everyone at AFC wishes Andrew a speedy recovery."
- Sports & Recreation
- Andrew Considine