I used to trip over myself quite a bit, never thought it was due to the AN I recently found out I have. I happen to have arthritis in one hip several decades, and more recently, a bit of trouble with my knee in the other leg. I had a fall last year (last couple steps/fractured wrist). It occurred to me that I needed to take more care, and in particular, be mindful about walking. We hear a lot about mindful eating etc., and I start my day really thinking about the contact my feet make with the ground, planting my feet down straight on steps, lifting my knees, and how that feels. I also think about posture, looking ahead and not down at my feet etc. I don't stumble anymore - I wear light, snug and supportive shoes around the house because I feel more confident. I can't attribute the improvement to anything other than mindful walking at the start of each day, or coincidence, since I get my AN taken care of later this month.
I hope you're doing well and the CK worked for you.