When Tsunade, a Konohagakure medical ninja, returns to lead the village as the Fifth Hokage, she offers to operate on him. Despite the procedure's fifty percent chance of failure, Guy encourages Lee to have the operation. Ultimately, Lee undergoes the surgery, which succeeds in healing his arm and leg.

Will Rock Lee be able to fight again?

From his battle with Gaara, Lee would prove to be injured to such an extent that he is told he can never be a shinobi again.

Does Lady Tsunade heal Rock Lee?

Later, Tsunade goes to the hospital to heal Sasuke Uchiha, Kakashi Hatake, and Rock Lee. She heals both Sasuke and Kakashi then proceeds to examine Lee.