Lively -- who is expected to be out 2-3 months -- had missed three games with what was listed as an ankle sprain

Dallas Mavericks center Dereck Lively II has sustained a small fracture in his foot and is expected to miss 2-to-3 months, sources tell ESPN. Critical loss for the Mavs. pic.twitter.com/XJje4eZQsY

The Dallas Morning News spoke to Kenneth Jung, a foot and ankle surgeon at Cedars-Sinai Orthopedics in Los Angeles, to gain insight into Lively’s stress fracture, treatment and recovery timetable. Jung’s education includes a 2005 fellowship in foot and ankle surgery at Baylor University Medical Center in Dallas.