Nguyen V D, London J, Cone R O
Radiology. 1986 Jan;158(1):129-31. doi: 10.1148/radiology.158.1.3940369.
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.
严重的针道感染是与使用骨固定针相关的一种潜在危险并发症。特征性的影像学表现——环形死骨，几乎可诊断这一异常情况。本文介绍了七例接受该并发症治疗患者的临床和影像学表现。无感染的热坏死表现为针道周围的硬化区。致密骨周围可能有一个狭窄的放射性透亮晕。当一个狭窄的环形死骨被放射性透亮晕环绕时，则存在相关感染。
