Table 1.

Diagnostic performance of all MRI features in detecting infected THA

	Bone destruction	Periarticular mass	Effusion	Synovitis	Lamellated synovitis	Extracapsular edema	Fibrous membrane	Bone edema	Extracapsular collections
Sens	36.8%	5.4%	73.7%	50.9%	29.8%	64.9%	36.8%	80.7%	50.9%
Spec	51.7%	77.8%	59.5%	96.6%	97.4%	87.1%	75.9%	76.7%	81.0%
PPV	27.3%	10.3%	47.2%	87.9%	85.0%	71.2%	42.9%	63.0%	56,9%
NPV	62.5%	63.2%	82.1%	80.0%	73.9%	83.5%	71.0%	89.0%	77.0%
Acc	46.8%	54.3%	64.2%	81.5%	75.1%	79.8%	63.0%	78.0%	71.1%
OR	0.625	0.198	4.111	29.000	16.008	12.457	1.833	13.785	4.425
P	0.155	0.005	< 0.001	< 0.001	< 0.001	< 0.001	0.081	< 0.001	< 0.001

Sens.: sensitivity; Spec.: specificity; PPV: positive predictive value; NPV: negative predictive value; Acc.: accuracy; OR: odds ratios; P: P-value with statistical significance set at P < 0.003