Annulus fibrosis calcification is a form of intervertebral disc calcification where the peripheral annular portion (annulus fibrosis) can get calcifcied. This may occur in isolation or in conjunction with other sites of disc calcification. It could involve any portion of the spine. Some suggest that it may due to subclinical or chronic stress on the involved intervertebral disc 1.
If large in some situations it may mimic syndesmophytic bridging
- 1. Kerns S, Pope TL, de Lange EE, Fechner RE, Keats TE, Cimmino C. Annulus fibrosus calcification in the cervical spine: radiologic-pathologic correlation. (1986) Skeletal radiology. 15 (8): 605-9. Pubmed
- 2. Kullanuch Chanchairujira, Christine B. Chung, Jee Young Kim, Olympia Papakonstantinou, Min Hee Lee, Paul Clopton, Donald Resnick. Intervertebral Disk Calcification of the Spine in an Elderly Population: Radiographic Prevalence, Location, and Distribution and Correlation with Spinal Degeneration1. (2004) Radiology. 230 (2): 499-503. doi:10.1148/radiol.2302011842 - Pubmed
- 3. ALEXANDER SF, ALEXANDER S. Calcification of the annulus fibrosus. (1949) The Journal of the Medical Society of New Jersey. 46 (12): 562-4. Pubmed