Ring sequestrum: Radiographic characteristics of skeletal fixation pin-tract osteomyelitis

V. D. Nguyen, J. London, R. O. Cone

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Major pin-tract infections are a potentially dangerous complication associated with the use of skeletal transfixation pins. The presence of a characteristic radiographic finding, the ring sequestrum, is virtually diagnostic of this abnormality. The clinical and radiographic findings in seven patients treated for this complication are presented. Thermal necrosis without infection presents as a zone of sclerosis around the tract. A narrow, radiolucent halo may surround the dense bone. When a narrow ring sequestrum is surrounded by a radiolucent halo, there is associated infection.

Original languageEnglish (US)
Pages (from-to)129-131
Number of pages3
Issue number1
StatePublished - 1986

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging


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