Chicken with swollen "knee" - limping

[Eggcessive]

We also have a RI red that was the smallest bird in the 6 chickens flock that an elderly lady inherited from her deceased husband. I don’t know if it’s twisted from being caught in the cage and never mended properly or what.
She can only hop on that leg very gingerly. She’s isolated and feeding well after 4 weeks with the vitamin B Group supplements but no changes to knee. Going to vet on Thursday so see what happens.

Welcome to BYC. You might want to start a new thread of your own, and include a description of symptoms and pictures of your chicken. Here is where to fill in the blanks to start one:
https://www.backyardchickens.com/forums/emergencies-diseases-injuries-and-cures.10/post-thread