Dipartimento di Chirurgia Ricostruttiva e delle Infezioni Osteo-articolari, Istituto Ortopedico IRCCS Galeazzi - Via Riccardo Galeazzi 4, Milano, 20166 Italy.
BMC Musculoskelet Disord. 2013 Jan 4;14:7. doi: 10.1186/1471-2474-14-7.
Diagnosis of peri-prosthetic infection remains challenging, often requiring a combination of different tests.
In this prospective, case-control study, the diagnostic accuracy of telethermography was evaluated in a group of seventy patients who had had a total knee replacement and were undergoing a reoperation because of infection or another implant-related problem, after a minimum of one year from implant.
An average differential temperature of the affected versus not affected knee of 1.9 °C was observed in infected prosthesis, compared to 0.3 °C in aseptic failures. Considering a normal reference value equal or less than 1.0 °C, telethermography showed an accuracy, sensitivity, specificity, positive and negative predictive value of, respectively: 0.90, 0.89, 0.91, 0.91, 0.88.
Digital telethermography is a reliable option for diagnosing peri-prosthetic knee infection.
人工关节周围感染的诊断仍然具有挑战性，通常需要结合使用不同的测试方法。
在这项前瞻性病例对照研究中，对 70 名接受全膝关节置换术并因感染或其他与植入物相关的问题而在植入后至少 1 年再次手术的患者进行了远程热成像诊断准确性评估。
在感染性假体中，受影响与不受影响的膝关节之间的平均温差为 1.9°C，而无菌性失败的温差为 0.3°C。考虑到正常参考值等于或小于 1.0°C，远程热成像的准确性、敏感性、特异性、阳性预测值和阴性预测值分别为 0.90、0.89、0.91、0.91 和 0.88。
数字远程热成像技术是诊断膝关节假体周围感染的可靠选择。
