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syndesmophyte
syndesmophyte n. 
/sɪnˈdɛsməˌfaɪt/ [-phyte comb. form] a bony outgrowth from an injured joint or vertebra.
Brit. /sɪnˈdɛsmə(ʊ)fʌɪt/
, /sɪnˈdɛsmə(ʊ)fʌɪt/U.S. /sɪnˈdɛzməˌfaɪt/
, /sɪnˈdɛzməˌfaɪt//sɪnˈdɛsməˌfaɪt/ΘΚΠ
the world > health and disease > ill health > a disease > diseases of tissue > disorders of joints > [noun] > outgrowth or loose fragment
mouse1850
joint mouse1886
syndesmophyte1957
1957 in Dorland's Med. Dict. (ed. 23) , *Syndesmophyte.
1966 E. W. Boland in J. L. Hollander Arthritis (ed. 7) v. xxxix. 648/1 In contrast to the marginal, heavy osteophytes of degenerative disease of the spine, the syndesmophytes of ankylosing spondylitis begin as linear, poorly defined calcifications adjacent to the margins of the vertebral bodies.
1980 Bluestone & Katich in R. Bluestone Rheumatology xxiii. 284 (caption) Note mature syndesmophytes outlining annulus of several disks and bridging vertebral bodies.
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