In 2021, Cain Madden had a significant arm injury (right arm) and was still reasonably effective, since there was a lot of traps and pulls where he relied on lateral movement to compensate for his bad wing. Madden had pretty good technique, and also had good mobility, so he was able to make it work.
Under Jeff Quinn's finesse blocking emphasis, Madden performed adequately. If he were plugged into Joe Rudolph's scheme, I don't think he would have done nearly as well.
Also, it wasn't a broken arm for Cain Madden.
You need at least 6 weeks to heal from a broken humerus, and that's assuming that it's not a complete break. That's for a "normal" human being, not some elite athlete who has to block those 300 lb monsters on the defensive line.
Late September seems to be about the right time for Jagusah to come back. 7-8 weeks to heal, another couple weeks to get his strength back up to reasonable levels. The doctor said that the surgery went exceptionally well, so let's hope that Charles Jagusah can get back to full speed and strength.