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. 2021 Dec 8;23:299. doi: 10.1186/s13075-021-02685-7

Table 3.

GS and PD US findings of patients with CSA

Grey Scale findings
47 (42.7%)
Power Doppler findings
38 (34.5%)
Synovitis
 Hands 31 (28.2%) 25 (22.7%)
  Wrist 28 (25.5%) 20 (18.2%)
  MCP 19 (17.3%) 16 (14.5%)
  PIP 4 (3.6%) 2 (1.8%)
 Feet 16 (14.5%) 8 (7.2%)
  Ankle 5 (4.5%) 4 (3.6%)
  Tarsal joints 3 (2.7%) 3 (2.7%)
  MTP 9 (8.2%) 2 (1.8%)
Tenosynovitis
 Hands 13 (11.8%) 10 (9.1%)
  2nd, 3rd, 4th or 5th flexor 7 (6.4%) 5 (4.5%)
  4th extensor 1 (0.9%) 0 (0%)
  6th extensor 6 (5.5%) 6 (5.5%)
 Feet 4 (3.6%) 4 (3.6%)
  Tibialis anterior 0 (0%) 0 (0%)
  Posterior tibialis 3 (2.7%) 3 (2.7%)
  Peroneus 1 (0.9%) 1 (0.9%)
Erosions
 Total 9 (8.2%)
 Hand 6 (5.4%)
 Feet 3 (2.7%)

Abbreviations: GS Grey Scale, PD power Doppler, US ultrasound, MCP metacarpophalangeal, PIP proximal interphalangeal, MTP metatarsophalangeal