Mineralization In The Cannon Bone

To visualize what's going on in the cannon bone during the breeze we have to consider how the canon is constructed at that point in time. Particularly we are interested in the strength and state of maturity of mineralization, which is an ongoing process, as we go from the interior of the bone on outward.

Last post I noted that the mineralization takes about two weeks to establish itself and then (presumably) continues to mature until you have the a crystallized lattice completely encompassing the remnants of the living bone proteins and collagen fibrils of the matrix.

The initial part of this process (I'm guessing) would be the laying down of calcium crystals in and around the bone proteins and collagen fibrils that make up the immature cells of the matrix (live bone material). Eventually this crystallization process will "encase" those proteins and collagen fibrils, and finally the collagen itself begins to mineralize until you get that final layer of material that has the strength of reinforced concrete.

In our young horse age 3 I'm presuming only the interior sections of the canon bone have completed this process and that as you go outward from the interior to the periosteum membrane that covers the outer bone surface the state of mineralization is less and less mature as you proceed outward until you reach (at some point) live matrix cells where mineralization has yet to begin.
May we presume the outer surface of the cannon bone just below the periosteum consists of unmineralized bone matrix. This unmineralized outer layer is being constructed by Osteoblasts and is called the Osteoid, per below.

With this background I'm ready to discuss what's happening during the breeze and more importantly the state of the Osteoid surface and inward immediately post breeze.

Training:
Mon. 7/21: Tack work for Art--1.5 miles trot with some short gallops. We'd no more thrown Nob up on Rod when we noticed a missing front shoe and a severely lacerated heel bulb. Work canceled, shoe reapplied. Luckily we had only a bulb injury. Idiot.
Tues. 7/22: Fast work day. RR outsmarts himself. The original plan was tack work then fast, but go to the farm and the youngsters were fighting and already into it, so thought I'd do light riderless fast then tack work after. The riderless faster work turned into 3 x 2f all out for Art. He looked good, but too fast to risk tack work after in case of any injury. Rod was allowed to trail with his heel bulb injury. We will wait to after Sept. to press the 2 year old.