User blog comment:Majestic Soaring Cloud/Injuries in Bleach/@comment-6943043-20130715145745

i think that wounds caused by Zanpakutou are/may be healed, depending on the severity of the wound. I think Yama-jii never got his arm back because i think that wounds caused by kido are irreplaceble or maybe it could be the power of Ittou Kaso which obliterated the arm. My theory is that Kido has a backlash effect depending on the spell (evident with Kurohitsugi and Ittou Kaso). Depending on how and how effectively the spell is used, the kido could possibly kill the user. however i think that Hitsugaya-taicho was able to heal as he must have gone to the 12th division. Or it could be that they didn't heal Yama's arm, they couldn't heal it.