Value of musculoskeletal ultrasound in assessment of rheumatoid hand function

Egyptian Journal of Radiology and Nuclear Medicine

Table 2 Comparison between RA hands with and without different ultrasonographic findings as regards GAT. Cut-off values for MSUS findings to be present: grade 1 synovitis (grade 1 SH and ≤ grade 1 PD signal) or more of any of the mentioned joints, grade 1 or more tenosynovitis of any of the mentioned tendons

	GAT (seconds) Normal: ≤ 20 s
	Absent		Present
	Median	IQR	Median	IQR	p value
Ulnar 4 PIPJs synovitis	32.5	18.5–75.5	37.0	18.5–69	0.851
Ulnar 4 MCPJs synovitis	27.5	17–47.5	43.5	29.5–92	0.009
Wrist joint synovitis	30.5	17–54	77.5	32–100	0.004
Flexor tendons tenosynovitis of the ulnar 4 fingers	30.5	18–60	52.0	34–147	0.042
Extensor tendons tenosynovitis of the ulnar 4 fingers	32.5	19–74	40.5	17–100	0.758
Tenosynovitis of EPL, EPB, APL, and FPL	30.0	18–59	75.0	40–120	0.005
FPL tendon tenosynovitis	33.0	18–74	37.0	31–147	0.396
FCU, ECU, FCR, ECRL, and ECRB tendons tenosynovitis	32.0	18–76	37.0	23–74	0.854

Bold, < 0.05
P level of significance, GAT grip ability test, IQR interquartile range, MCP metacarpophalangeal, MCPJs metacarpophalangeal joints, PIPJs proximal interphalangeal joints, APL abductor pollicis longus, EPL extensor pollicis longus, EPB extensor pollicis brevis, FPL flexor pollicis longus, FCU flexor carpi ulnaris, ECU extensor carpi ulnaris, FCR flexor carpi radialis, ECRL extensor carpi radialis longus, ECRB extensor carpi radialis brevis