sequestrum
/sɪˈkwɛstrəm
/noun (plural sequestra /sɪˈkwɛstrə/) Medicine
A piece of dead bone tissue formed within a diseased or injured bone, typically in chronic osteomyelitis.Although bone sequestra and abscess are treated surgically, further extension of the operation may be counterproductive because it may expose healthy bone to the infection....
- Despite 77 courses of antibiotics, these 12 patients required an additional 17 surgical debridements to rid the pelvis of the bone sequestrum.
- The radiographs may reveal osteolysis, periosteal reaction and sequestra.
Derivatives
sequestral
- The mechanisms of secondary sequestral formation are somewhat different.
- In internal necrosis the separation of dead bone from living proceeds in the manner already described, and the sequestrum is contained within the sequestral capsule.
sequestrectomy
- The foul smelling discharge responded only temporarily to antibiotics, and she required surgical debridement and sequestrectomy to remove the infected bone.
- Today, sequestrectomy has been suggested as a modification to microdiscectomy.
- Four days later she suffered from recurrent pain, and neuroimaging studies revealed an epidural gas formation at the site of the sequestrectomy.
Origin
Mid 19th century: modern Latin, neuter of Latin sequester 'standing apart'.
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