Yankees pitcher C. C. Sabathia, who received a cortisone shot with stem cells Thursday as treatment for a degenerative condition in the cartilage in his right knee, will be out for at least six more weeks, General Manager Brian Cashman said Monday.

Dr. James Andrews, a noted orthopedic surgeon, performed the procedure on Sabathia, which was aimed at reducing inflammation and facilitating the healing process. Cashman said the protocol for Sabathia, a left-handed starter on the disabled list, is to be out six weeks from the date of the injection, which would be June 26.

“Hopefully, it resolves it,” Cashman said last week of the shot. “If not, then we’ll talk about it later.”

Sabathia had said he felt discomfort in his knee in his second-to-last start, on May 4 against the Tampa Bay Rays, and that his knee swelled after the game. In his next, and last, start, on May 10 in Milwaukee, Sabathia felt discomfort throughout the game and had swelling again.