sequestrum

sequestrum
A piece of necrotic tissue, usually bone, that has become separated from the surrounding healthy tissue. [Mod. L. use of Mediev. L. s., something laid aside, fr. L. sequestro, to lay aside, separate]
- primary s. a completely detached s..

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se·ques·trum si-'kwes-trəm n, pl -trums also -tra -trə a fragment of dead bone detached from adjoining sound bone

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n. (pl. sequestra)
a portion of dead bone formed in an infected bone in chronic osteomyelitis. It is surrounded by an envelope (involucrum) of sclerotic bone and fibrous tissue and can be seen as a dense area within the bone on X-ray. It can cause irritation and the formation of pus, which may discharge through a sinus, and is usually surgically removed (sequestrectomy).

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se·ques·trum (sə-kwesґtrəm) pl. sequesґtra [L.] 1. any tissue that has become sequestered. 2. a piece of dead bone that has become separated during the process of necrosis from the sound bone.

Formation of a sequestrum: (A), sound bone; (B), new bone; (C), granulations lining involucrum; (D), cloaca; (E), sequestrum.


Medical dictionary. 2011.

Look at other dictionaries:

  • Sequestrum — Se*ques trum, n.; pl. {Sequestra}. [NL. See {Sequester}.] (Med.) A portion of dead bone which becomes separated from the sound portion, as in necrosis. [1913 Webster] …   The Collaborative International Dictionary of English

  • sequestrum — [si kwes′trəm] n. pl. sequestrums or sequestra [si kwes′trə] [ModL < L, a deposit: see SEQUESTER] Med. a piece of dead bone which has become separated from the surrounding healthy bone …   English World dictionary

  • Sequestrum — A sequestrum is a piece of dead bone that has become separated during the process of necrosis from normal/sound bone.It is a complication (sequelae) of osteomyelitis. The pathological process is as follows: *infection in the bone leads to an… …   Wikipedia

  • sequestrum — /səˈkwɛstrəm/ (say suh kwestruhm) noun (plural sequestra /səˈkwɛstrə/ (say suh kwestruh)) a dead portion of bone separated from the living bone. {New Latin, special use of Latin sequestrum something detached, properly neuter of sequester… …  

  • sequestrum forceps — forceps with small but strong serrated jaws for removing the portions of bone forming a sequestrum …   Medical dictionary

  • sequestrum — noun (plural trums; also sequestra) Etymology: New Latin, from Latin, legal sequestration, from sequester Date: 1831 a fragment of dead bone detached from adjoining sound bone …   New Collegiate Dictionary

  • sequestrum — sequestral, adj. /si kwes treuhm/, n., pl. sequestra / treuh/. Pathol. a fragment of bone that has become necrotic as a result of disease or injury and has separated from the normal bone structure. [1825 35; < NL; ML: sequestrated property, deriv …   Universalium

  • sequestrum — noun A fragment of bone or other dead tissue that has separated during necrosis …   Wiktionary

  • sequestrum — n. piece of tissue (especially bone) that has detached from the surrounding healthy tissue (Medicine) …   English contemporary dictionary

  • sequestrum — [sɪ kwɛstrəm] noun (plural sequestra trə) Medicine a piece of dead bone tissue formed within a diseased or injured bone, typically in chronic osteomyelitis. Derivatives sequestral adjective Origin C19: mod. L., neut. of L. sequester standing… …   English new terms dictionary

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