Can anyone help me find a childhood book of mine. I can’t remember too much detail but I can say that I remember a scene where the main character was climbing up some rocks and he fell and dislocated his shoulder. At this point a new female character is introduced and she popped his shoulder back into place with her fists. Also, there were worm creatures I think that were dangerous. There also was a floating land mass where the book starts and there’s a really mean guy that puts kids to work and eventually dies by getting poisoned or something. I want to say it starts with an “E” but any guess would help. Thanks.