Table 2.

Results from the included studies

Authors	Patients (joints)	TP	TN	FP	FN	Sensitivity	Specificity	PPV	NPV	Accuracy
Creutzig H. et al.	31 (31)	13	14	4	0	100	0.78	0.76	100	0.87
Sterner et al.	14 (14)	5	5	4	0	100	0.56	0.56	100	0.71
Kobayashi N et al.	49 (65)	36	23	6	2	0.95	0.88	0.95	0.98	0.91