Table 3 Scans and anatomical sites of the bilateral (PsASon22) and unilateral ultrasound score (PsASon13)

Anatomical sites

Scans (all bilateral)

Ultrasound findings

Small finger joints:

MCP2, MCP3, MCP5, H-PIP2,H-PIP3

Dorsal, palmar

GSS, PD-j, GS-Peri (MCP only), PD-Peri (MCP only), GS-Teno, PD-Teno, erosion, osteophyte

Distal interphalangeal finger joints:

H-DIP2, H-DIP3

Dorsal, palmar

GSS, PD-j, GS-Teno, PD-Teno, erosion, osteophyte

Small joints of feet:

MTP1

Dorsal

GSS, PD-j, erosion, osteophyte

Distal interphalangeal joints of feet:

F-DIP3

Dorsal

GSS, PD-j, erosion, osteophyte

Large joints:

Wrist

Dorsal

GSS, PD-j, GS-Teno (wrist only), PD-Teno (writs only)

Knee

Suppat., medial, lateral

Entheses:

Lateral epicondyle, distal patella

n.a.

GSE, PD-e, erosion, osteophyte

Anatomical sites

Scans (all unilateral, dominant site)

Ultrasound findings

Small finger joints:

MCP2, MCP5, H-PIP1, H-PIP2,H-PIP3

Dorsal, palmar

GSS, PD-j, GS-Peri (MCP only), PD-Peri (MCP only), GS-Teno, PD-Teno, erosion, osteophyte

Distal interphalangeal finger joints:

H-DIP3

Dorsal, palmar

GSS, PD-j, GS-Teno, PD-Teno, erosion, osteophyte

Small joints of feet:

GSS, PD-j, erosion, osteophyte

MTP1, MTP5, F-PIP1

Dorsal

Distal interphalangeal joints of feet:

F-DIP2, F-DIP3

Dorsal

GSS, PD-j, erosion, osteophyte

Large joints:

Wrist

Dorsal

GSS, PD-j, GS-Teno (wrist only), PD-Teno (writs only)

Knee

Suppat., medial, lateral

Entheses:

Lateral epicondyle, distal patella

n.a.

GSE, PD-e, erosion, osteophyte