Yep, I'll bet that's a factor. And that, too. On the bright side, my hip feels radically better today - if I thought I could trust my knee, I'd be ditching the cane for longer periods like I did last time. But that feckless joint's betrayed me too often, so the partnership of Bone-obo and Cane will be sticking around (see what I did there?) for a while longer.