The articular cartilage that covers the bone ends and the meniscii which are commonly referred to when one has a torn cartilage
Thanks for the quick lesson and the memory jog as well. I remember my ortho Dr explaining some of what you said when I asked him: why, after 19 yrs did my knee decide to act up again. He mentioned the bone cartilage finally wore off and now it was bone on bone...or something similar to that.
I take it that by 'empty compartments'
The empty compartments term was actually from the OS medical report: "The findings of significant end-stage degenerative joint disease were most marked in the medial and patellofemoral compartments. There was a varus attitude. There was a complete loss of the articular cartilages in the medial compartment."
No doubt I need to find the time to study up on the mechanics of the knee. I took that info from the report and related it to my knee. On the front inner side of the left knee, I can feel a significant void and is painfull when pressed. Night and day difference when compared to the right knee, which is solid in the same area.
watching your dog while she's in the garden
in the garden??? Bite your tongue my dear woman

I'd never let her... Actually she's trained to go in a specific area on the other side of the driveway, by the wood line. Don't need to deal with 'land mines' from a GSD when cutting the grass. And the Mrs would have a fit if she left a surprise in her garden
Great suggestion about a stool by the door! I have a couple nice comfy bar stools out in the garage. I can just lean back onto it instead of suffering trying to sit down and then getting back up from something lower. I'll bring one in and leave it in the foyer in case I need it.
edit...btw, in case you or anyone else doesn't know, GSD = German Sheperd Dog and is what most GSD owners use when referring to their dog