Table 3.

Frequency of intermetatarsal bursitis (IMB) according to status at physical joint examination (PE) and MRI for all 1759 MTP joints in early arthritis

	MRI+		MRI−
	IMB+	IMB−	IMB+	IMB−
PE+, n (%)	63 (85)	11 (15)	31 (39)	48 (61)
PE−, n (%)	177 (63)	104 (37)	245 (18)	1080 (82)

PE physical joint examination; PE+ swollen joints; PE− non-swollen joints; MRI magnetic resonance imaging; MRI+ positive for MRI-detected inflammation, defined by the presence of synovitis, tenosynovitis, and/or osteitis; MRI− negative for MRI-detected inflammation; IMB intermetatarsal bursitis, either present (+) or absent (−)