How does a Broken Bone Heal?

The human bone is so strong it’s a wonder it ever does break! Bone can carry a load 30 times greater than brick can. The strongest bone in the body, the shine bone, can support a load of 1,600 kilograms.

Yet, as we all know, bone sometimes breaks as a result of violence. Each type of break has name depending on how the bone has been broken.

If a bone is just cracked with part of the shaft broken and the reminder bent, it is called and “infraction”. if there is a complete break it is a called a “simple fracture”.


If the bone is broken into more than two pieces, it is a “commute fracture”. and if the pieces pierce the muscle and the skin, it is a “compound fracture”.

Mending a broken bone is some what like mending a broken saucer. The fragments have to be brought into as close alignment as possible. But the big difference is that the doctor does not have to apply any glue.

This is produced by connective tissue cells of the bone itself. When bone is broken, bone and soft tissues around the break injured. Some of the injured tissue dies. The whole area containing the bone ends and the soft tissue is bound together by clotted blood and lymph.

Just a few hours after the break, young connective tissue cells begin to appear in this clot as the first step in repairing the fracture. These cells multiply quickly and become filled with calcium.

Within 72 to 96 hours after the break, this mass of cells forms a tissue which unites the ends of the bones! More calcium is deposited in this newly formed tissue.

And this calcium eventually helps form hard bone that develops into normal bone over a period of months. A plaster cast is usually applied to the broken limb in order to immobilize the bone and keep the broken edges in perfect alignment. 

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