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. 2020 Mar;19(1):28-37.
doi: 10.1016/j.jcm.2019.12.002. Epub 2020 Sep 12.

Accuracy of the Diagnostic Tests of Sacroiliac Joint Dysfunction

Parisa Nejati  1 , Elham Sartaj  1 , Farnad Imani  2 , Reza Moeineddin  3 , Lida Nejati  4 , Marta Safavi  1
Affiliations

Accuracy of the Diagnostic Tests of Sacroiliac Joint Dysfunction

Parisa Nejati et al. J Chiropr Med. 2020 Mar.

Abstract

Objective: The purpose of this study was to assess the reliability and validity of motion palpation and pain provocation compared with sacroiliac joint (SIJ) block as the gold-standard assessment method of patients with sacroiliac joint dysfunction (SIJD).

Methods: A cross-sectional study was conducted in the Department of Sports and Exercise Medicine at Rasool Akram Hospital. Forty-eight patients suspected of having SIJD were selected from a total of 150 patients on the basis of a combination of symptoms, physical tests, and magnetic resonance imaging findings. The patients suspected of having SIJD received the SIJ block, to which the accuracy of all the physical tests was compared. Sensitivity, specificity, and positive and negative predictive values were calculated for each test. The receiver operating characteristic curve and the area under the receiver operating characteristic curve were measured.

Results: The Flexion, Abduction and External Rotation (FABER) test had the highest specificity and positive predictive values of the physical tests. Furthermore, the combination of the FABER test and the thigh thrust test improved overall diagnostic ability more so than any of the other test combinations.

Conclusion: A combination of the motion and provocation tests increased specificity and positive predictive values, and the FABER test had the highest of these single values. The palpation tests did not change after the SIJ block, suggesting that their accuracy cannot be determined using this method.

Keywords: Diagnostic Tests; Predictive Value of Tests; Sensitivity and Specificity.

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Figures

Fig 1
Fig 1
The flowchart of the study. LBP, lower back pain; MRI, magnetic resonance imaging; SIJ, sacroiliac joint.
Fig 2
Fig 2
VAS scores before and after the SIJ block in SIJD-positive patients. SIJD, sacroiliac joint dysfunction; VAS, visual analog scale.
Fig 3
Fig 3
VAS scores before and after the SIJ block in SIJD-negative patients. SIJD, sacroiliac joint dysfunction; VAS, visual analog scale.
See this image and copyright information in PMC

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