Happy you’re able to determine that from one comment. Now here’s where your comment just doesn’t make any sense. I think I could, as well as anyone here, determine by the amount of wear on each shoe that these have been worn to hell and back, meaning, that he has likely worn each opposite shoe to either set also to hell and back. Wether you think it’s because one foot is swollen or not, he has absolutely worn the other shoe in the pair right? Which means he likely had the ability to pair the shoes together and they do in fact fit him enough to be worn for years with or without his current injury status. Glad my lack of basic knowledge on anything but shoes could help you through this difficult time.