Bone Remodeling/Fracture Resistance: What Is It?

The world keeps turning. Edward Evans moves Quality Road from Jimmy Jerkens to Todd Plecher. This must have happened before my Dunkirk posts. The beat goes on with the owner-trainer quandary.

But, here it's back to 'let's get technical'. I am attempting to think through all this as we go, and, before wrapping up the post-event happenings in the cannon bone at the micro level, it occurred to me that I'd yet to define the basics of what is being talked about, which would be FR and Bone Remodeling.

May we define Fracture Resistance, termed here "race appropriate FR" merely as that quality of measurable bone strength that will hold up to the event? But, consider these contexts:

1. Is FR static to every race situation, or does FR vary with the event. Do we need the same FR for a 6f race as we do for 1.5 miles?

2. After the horse achieves FR, will FR thereafter remain, or is this quality of bone changeable depending on circumstances?

"Bone remodeling" seems a general term to describe bone strengthening in response to exercise. On deeper consideration it's a little more complicated:

1. Can the bone remodeling as a process go either way--stronger or weaker?

2. If bone strengthens, what is it that occurs? Does this signify changes in density, size, circumference, stronger molecular bonds, or does weaker bone merely deconstruct to be replaced by new material that is stronger in some specific way?

Training:
Sun 6/14 Off.
Mon. 6/15 Art trots 2.5 miles on very soft squishy ground.
Ground conditions dangerous for sky watching Rod. We fear he'll misstep. Rod does a snappy riderless gallop 2.5 miles through deep mud.