Late finding which is said to be pathognomonic of pin tract infection is "ring" sequestrum. The appearance of this finding is due to the particular geometry of a pin and pin tract. As a pin tract becomes infected, the bone immediately adjacent to the pin becomes infected first, and a certain amount of it dies. The viable bone adjacent to this infected dead bone then becomes hyperemic and becomes relatively osteopenic. The infected dead bone remains at its original density. Once the pin has been removed, if one looks directly down the pin tract with a radiograph, this cylinder of dead bone looks like a "ring".
- ► 2014 (127)
- Unusual Pre-axial Polydactyly
- Useful tips: Radiographic Features of White Matte...
- Gall Bladder Wall Cyst [ Possibly Submucous Cyst ...
- Ring Sequestrum- Plain Film
- Radiology Degree and Business
- Hamartomatous Polyps - A rare cause of adult intus...
- Dr John Haaga receives ARRS Gold Medal for disting...
- Wormian Bones-Causes
- DAMS recognised as one of the Top 35 Education Ide...
- Xray's Discovery-"I have seen my death"
- Nobel Prize for CT scan-Radiology Milestones
- HIV Encephalopathy-MRI
- Slaves of the Clock
- Single Coronary Artery-MDCT
- Basal Ganglia T1 Hyperintensity-MRI
- Delayed Myocardial Enhancement-Ischemic versus Non...
- Second Opinion- Radiology -Patient Centric Approac...
- Syringomyelia without hindbrain herniation: possib...
- Meningioma-Teaching Points
- Best Tablet Based Medical Education Programme-iDAM...
- Complex Carotid Artery Stenting
- 3D CT in Otzi the iceman reveals Dental problems
- Face of the giant panda and her cub- Wilson's Dise...
- Cavernous Angioma of the Cavernous Sinus-MRI
- MR Finger Printing-will it change MRI as we know?
- Central Canal or Syrinx-MRI Teaching Point
- Multisystem Atrophy versus Parkinsonism-MRI- Teach...
- Posterior Ligamentous Injury
- ▼ April (28)
- ► 2012 (229)
- ► 2011 (282)
- ► 2010 (171)
- ► 2009 (191)
- ► 2008 (194)
- ► 2007 (131)
- ► 2006 (221)
- ► 2005 (158)