SPECT/CT对全膝关节置换术后不明原因疼痛的诊断价值

doi:10.12117/jccmi.2019.06.015

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Abstract Objective: To investigate the diagnostic value of SPECT/CT for pain reason after total knee arthroplasty. Methods: From October 2012 to June 2016, 51 patients who failed to find the pain reasons by anatomical imaging(DR, CT) after total knee arthroplasty were examined by 99mTc-MDP SPECT/CT fusion imaging. The final diagnoses were made according to surgery, imaging results, or treatment outcome. All patients were followed up at least 6 months. Diagnostic efficiency of SPECT/CT was calculated. Results: Thirty-five(68.63%) in 51 cases had positive findings by SPECT/CT imaging. Thirty-two cases were true positive, including 17 cases of aseptic loosening(femoral loosening in 6 cases, tibial plateau loosening in 7 cases, both loosening in 4 cases), 6 cases of infectious loosening, patellofemoral joint disorders in 9 cases. Three cases of false positive, SPECT/CT imaging showed aseptic loosening, follow-up confirmed as infection. Sixteen cases showed negative (including false negative in 2 cases, the remaining 14 cases of non-prosthesis and bone-derived pain). For patients with unexplained pain after total knee arthroplasty, the sensitivity of SPECT/CT for the diagnosis of prosthetic or bone-derived pain was 91.43%(32/35), specificity was 87.5%(14/16), and the coincidence rate was 86.49%(32/37). Conclusion: When DR and CT imaging failed to diagnose the pain reason after total knee arthroplasty, SPECT/CT imaging can provide valuable reference information for clinical.

Key words： Knee joint Pain Tomography, emission-computed, single-photon Tomography, X-ray computed

Received: 20 July 2018

PACS:	Ｒ684
	Ｒ817.4
	Ｒ814.42

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	Articles by authors
	ZHANG Bin-qing
	SONG Qing-feng
	LIU Yu-ke
	GUO Hui-li

Cite this article:

ZHANG Bin-qing,SONG Qing-feng,LIU Yu-ke, et al. Diagnostic value of SPECT/CT for pain reason after total knee arthroplasty[J]. JOURNAL OF CHINA MEDICAL IMAGING, 2019, 30(6): 437-440.

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http://www.jccmi.com.cn/EN/10.12117/jccmi.2019.06.015 OR http://www.jccmi.com.cn/EN/Y2019/V30/I6/437

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