Leg problems

[Chestnut Buttercup]

One of my hens buttercup has been having leg problems for the past 2 years. But recently it’s been getting worse and she has trouble standing. Her joint where her knee is swollen and in the past I gave her glucosamine. Is there anything else I could do to make her feel better? She keeps getting better and then all of a sudden worse.

 

[Eggcessive]

Could you take some pictures of her legs and feet? Is it just the one knee that is swollen? Is she limping? Will she walk if you lift her up?

 

[Eggcessive]

You might look at some chicken slings and chairs to use if she gets worse. A sling can get her upright for period throughout the day, and in front of food and water. Here in post 5, 11-14 are some good examples and a basic design:
https://www.backyardchickens.com/threads/versions-of-chick-chairs-please.1166308/
A vet might prescribe meloxicam or Rimadyl for inflammation and pain.