Christian mcaffrey officially diagnosed with Achilles tendinitis after being a surprise inactive last night we finally get a little Clarity and find out why this concerns me a lot more than a simple calf straing what's up guys the djen doc here and let's start with what we know on August 4th mcaffry picked up an injury that was called a mild calf strain typically a one to two week injury 30 days out from the season everyone thought no big deal last week they added Achilles onto that as kind of an administrative note so they said then Friday we found out he had a little setback and a surprise inactive last night now why does this concern me achilles tendonitis refers to inflammation of the tendon that connects your muscles to your heel bone in order to get better it requires rest and Progressive loading he just suffered a reinjury on Friday and he's got an entire NFL season ahead of him if they bring him back too soon this can absolutely linger lead to more damage or even cause a complete rupture the other approach the 49ers could take is with eyes on the Super Bowl they could rest mcaffry are using very sparingly for the next month or so but that spells trouble for your fantasy team follow for more