Table 3 Comparison between RA hands with different ultrasonographic findings and RA hands with normal hand ultrasound as regards hand grip strength. 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
From: Value of musculoskeletal ultrasound in assessment of rheumatoid hand function
| Â | Grip strength (mmHg) | Â | |||
|---|---|---|---|---|---|
Absent | Present | ||||
Mean | SD | Mean | SD | p value | |
Ulnar 4 PIP joints synovitis | 186.3 | 50.7 | 177.8 | 43.4 | 0.524 |
MCP joints of ulnar 4 fingers synovitis | 195.0 | 48.4 | 170.2 | 45.1 | 0.045 |
Wrist joint synovitis | 196.4 | 45.1 | 164.0 | 46.9 | 0.009 |
Flexor tendons tenosynovitis of the ulnar 4 fingers | 191.0 | 47.8 | 145.5 | 29.2 | 0.001 |
Extensor tendons tenosynovitis of the ulnar 4 fingers | 184.1 | 45.8 | 180.0 | 61.3 | 0.808 |
Tenosynovitis of EPL, EPB, APL, and FPL | 190.4 | 49.5 | 148.5 | 14.7 | 0.000 |
FPL tendon tenosynovitis | 185.1 | 48.8 | 151.7 | 12.6 | 0.013 |
FCU, ECU, FCR, ECRL, and ECRB tendons tenosynovitis | 184.5 | 47.8 | 180.0 | 51.1 | 0.765 |