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Table 2 Ultrasound pathologies detected exclusively by dorsal or palmar/plantar scans of hand and foot joints and scans of different knee recesses

From: Ultrasound composite scores for the assessment of inflammatory and structural pathologies in Psoriatic Arthritis (PsASon-Score)

  Erosion Osteophyte GSS PD-j
  Dorsal only Palmar/plantar only Total Dorsal only Palmar/plantar only Total Dorsal only Palmar/plantar only Total Dorsal only Palmar/plantar only Total
Grade (range 0 to 3) 1 2 to 3 1 2 to 3 1 to 3 1 to 3 2 to 3 1 1 to 3 1 to 3 1 1 to 3 1 2 to 3 1 to 3 1 2 to 3 1 2 to 3 1 to 3
n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%) n (%)
H-PIP + H-DIP 6 (13.0) 8(17.4) 18(39.1) 12(26.1) 46(100) 117(19.5) 20(3.3) 124(20.6) 10(1.7) 601(100) 35(17.3) 14(6.9) 101(50.0) 25(12.4) 202(100) 10(22.2) 8(17.8) 14(31.1) 4(8.9) 45(100)
MTP 6(8.3) 32(44.4) 0 14(19.4) 72(100) 56(26.4) 49(23.1) 4(1.9) 1(0.5) 212(100) 37(42.1) 39(44.3) 3(3.5) 1(1.1) 88(100) 14(50.0) 13(46.4) 0 0 28(100)
F-PIP + F-DIP 8(34.8) 7(30.4) 0 6(26.1) 23(100) 74(27.8) 36(13.5) 25(9.4) 11(4.1) 266(100) 36(53.7) 9(13.4) 9(13.4) 2(3.0) 67(100) 9(37.5) 10(41.7) 1(4.2) 3(12.5) 24(100)
Wrist - - - - - - - - - - 47(51.7) 15(16.5) 1(1.1) 4(4.4) 91(100) 21(51.2) 11(26.8) 2(4.9) 0 41(100)
            Medial/lat. Suprapat.   Medial/lat. Suprapat.  
Knees            20(26.3) 9(11.8) 15(19.7) 0 76(100) 10(34.5) 9(31.0) 10(34.5) 2(6.9) 29(100)
  1. The table depicts the number of joints at which the indicated ultrasound lesion [that is, erosions, osteophytes, grey scale synovitis (GSS) or Power Doppler signals (PD-j)] and the respective grading (1 or 2 to 3) were exclusively identified by dorsal (Dorsal only) or palmar/plantar (Palmar/plantar only) scans. Total refers to the overall number of joints positive for the specific ultrasound abnormality (irrespective of whether it was identified by dorsal, palmar/plantar or both scans). We conducted separate analyses for small finger joints except metacarpophalangeal joints (H-PIP + H-DIP), small joints of feet (MTP or F-PIP + F-DIP) and wrists. At the knees, we compared medial plus lateral (Medial/lat.) versus suprapatellar (Suprapat.) scans. Data in parenthesis reflect the percentage of positive joints out of the total number of joints revealing the indicated ultrasound finding. F-DIP, distal interphalangeal joint of the feet; F-PIP, proximal interphalangeal joint of the feet, GSS, grey scale synovitis; H-DIP, distal interphalangeal joint of hands; H-PIP, proximal interphalangeal joint of hands; MTP, metatarsophalangeal joint; PD-j, power Doppler at joints; T, total number of patients with the specific lesion; hyphens indicate “not assessed”.