Nets team orthopedist Dr. Riley Williams III and Dr. Andrew Weiland removed a bone mass and calcium deposits from Lopez's right upper arm, Nets general manager Billy King announced.
"Brook was bothered this year by a bony lump that developed after he was hit in the arm early this year," Williams said in a statement released by the team. "The mass was successfully removed today. A full recovery is expected, and Brook should be able to return to basketball activities in approximately six weeks."
Lopez played through the problem this year and has not missed a game in his three-year career. He averaged 20.4 points and 6.0 rebounds per game for the Nets.
He is expected to start rehabilitation in two weeks and be ready for training camp.