The Celtics announced Thursday that Daniel Theis underwent successful surgery to repair his left knee lateral meniscus.
"The surgery was performed by Celtics Team Physician Dr. Anthony Schena and was assisted by Dr. Paul Weitzel at New England Baptist Hospital. Theis is expected to miss the remainder of the 2017-18 NBA season but should be fully recovered prior to the start of training camp."
Surgery ✅ and 1st of all: Thank you guys so much for all your messages the last couple days, it means a lot to me! Now it’s time to start the mission #ComebackStronger and as always I will work my heart out to master it!!!!!💪🏼📶💯☘️ #Celtics pic.twitter.com/M9P07OM7YR— Daniel Theis (@dtheis10) March 15, 2018
Theis sustained the injury during Sunday's loss to the Indiana Pacers.