I just got a walker delivered yesterday. My PT guy suggested I get one to help with my back and R leg problems. He also gave me another cane on Monday after he observed that my use of one cane was actually creating aproblem with my hip and gait. Provides better stability when I walk and will hopefully aid in the rebuilding of my R Leg muscles which had some atrophy from my 2009 back and leg injury.
Knees don’t like back issues. They want to work together and back issues cause one or the other to work extra hard...leading to...hip and gait problems. A walker gives you and your knees some comfort to work at allowing both knees to work as intended. Sounds like it is working for you.