What is sequestration of bone?

What is sequestration of bone?

A bony sequestrum is a single piece of bone present in an area of osteolysis. It is separated from the surrounding bone and is primarily observed in patients with bone infection.

What is sequestrum of chronic osteomyelitis?

Sequestrum formation is a complication of chronic osteomyelitis. The bone infarction results from loss of the blood supply to a segment of bone, due to the inflammatory process. Bone infarction is prone to occur in this situation because the inflammatory exudate is confined within a rigid bony cavity.

What is sequestrum and involucrum?

A sequestrum is a segment of necrotic bone that becomes separated or “sequestered” from the healthy intact bone. The reactive bone that forms around the necrotic sequestrum is referred to as the involucrum and the draining tract extending from the skin to the sequestrum is termed the cloaca.

What is a sequestrum medical term?

Medical Definition of sequestrum : a fragment of dead bone detached from adjoining sound bone.

What is Cloaca in osteomyelitis?

A cloaca can be seen in both acute and chronic osteomyelitis as a cortical defect that drains pus from within the medulla to the surrounding soft tissues. It is most easily seen on fluid-sensitive sequences because the draining pus within it will have high signal (Figures 2,​4) (9).

What causes a sequestrum?

There are three common causes to sequestrum formation; most commonly in cattle, a sequestrum is formed following a sharp trauma to the leg exposing the cortical bone and creating an ischemic zone that gets contaminated; a hematogenous septic microthrombus lodges in the cortical bone inducing ischemia; or it is formed …

What is cloaca in osteomyelitis?

What does involucrum mean?

Medical Definition of involucrum : a formation of new bone about a sequestrum (as in osteomyelitis)

Is the cloaca a bone?

A cloaca (pl. cloacae or cloacas) is a gap in the cortex of a bone affected by chronic osteomyelitis that allows the drainage of pus or other material from the bone into the adjacent tissues.

What are the types of osteomyelitis?

Subdivisions of Osteomyelitis

  • hematogenous (blood-borne) osteomyelitis.
  • anaerobic osteomyelitis.
  • osteomyelitis due to vascular insufficiency.
  • osteomyelitis, pyogenic, acute.
  • osteomyelitis, pyogenic, chronic.
  • vertebral osteomyelitis.