Metacafe Header Takeover

How the Body Works : Repair of Bone

Tags:
Bone Of Repair
dizzo95
  • Affiliate Submitter:
    dizzo95
  • International International
  • Comments: 0
  • Views: 783
  • Added: 02-Aug-07

How the Body Works Repair of Bone

The fracture of a bone is usually caused by direct violence or by a strong twisting strain. When a bone fractures the two fragments separate and in so doing tear the arteries in the Haversian systems that cross the fracture line. This damage results in the leakage of blood into the fracture, where it is trapped and soon clots. After a short time, the Haversian arteries go into spasm, causing the death of active bone cells not only at the fracture site, but also for some distance along the shaft. About two days after the break, the blood clot is invaded by capillaries and fibroblasts. The fibroblasts differentiate into bone-forming cells, or osteoblasts, and cells that form periosteal tissue on the outside of the bone. New tissue, called callus, surrounds the fracture and replaces the dead bone. The dead bone is absorbed and replaced by new bone, formed by the osteoblasts in the callus, which is remodeled by cells, called osteoclasts, to its original shape. This remodeling process is so effective that after a few months it is difficult to detect the fracture site.

  1. Categories: How To
Comments on

How the Body Works : Repair of Bone

4 Comments | Add Comment
  • Does the ...

    Does the pericranium which is the periosteum of the skull regrow and how long does it take? I had part of my pericranium removed during an endoscopic craniotomy. This has left an indent in my head. Will the pericranium regrow and in how long?

    By boydio [Affiliate User] 1202736133 Reply Spam Moderate Up Moderate Down
  • absorbing

    absorbing

    By sansensan [Affiliate User] 1200194033 Reply Spam Moderate Up Moderate Down
  • Hi, I'm ...

    Hi,

    I'm suffering from Humerus fracture and under going conservative treatment. you Video was useful to understand how bones heal. Do you have some more information on this.

    Thank you!

    By chanda2mama [Affiliate User] 1188528974 Reply Spam Moderate Up Moderate Down
  • Great Summary. ...

    Great Summary. Thanks for the post.

    By generalanatomy [Affiliate User] 1188301982 Reply Spam Moderate Up Moderate Down
4 Comments | Add Comment