I was kinda hoping the chest wound was some work-related injury, and both the hips and "smell" thing some related to foxes and the like.
Honestly, I feel a lot like when Shang fell in love with Ping...only to realize that he had been deceived and that the "he" was actually a "she".
And my major issue is how...out of place his...particular situation seems to be. That sort of surgeries are from the 50's onwards. Seeing it on the mid-30s (the zeppelins around make it impossible being a later date) is a bit hard to believe.
All of this makes his condition feel a bit forced and quite shoehorned in, as it makes no sense, at least in that specific date. If his route were to take place, say, on the 70s, it wouldn't be an issue.