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Table 2 Landmarks at standardized ultrasound examination of wrist and MCP joints

From: Feasibility of a standardized ultrasound examination in patients with rheumatoid arthritis: a quality improvement among rheumatologists cohort

Position

Landmarks

Wrist dorsal central

The third extensor digitorum tendon, tip of radius, carpometacarpal joint, os lunatum and os capitatum.

Wrist dorsal radial

The extensor carpi radialis longus tendon, tip of radius, carpometacarpal joint, os scaphoideum and os trapezoideum

Wrist dorsal ulnar

The middle of caput ulnae placed minimum 1 centimetre from the right side and minimum 2 from the left side of the image margins

Wrist volar central

N. medianus, tip of radius, radiocarpal and intercarpal joints

MCP* dorsal radial

Joint space, diaphysis of the metarcarpal and proximal phalanx bones. The joint space has to be placed minimum 2 centimetre from the right side and minimum 1 centimetre from the left side of the image margins

MCP* dorsal ulnar

Joint space, diaphysis of the metarcarpal and proximal phalanx bones. The joint space has to be placed minimum 2 centimetre from the right side and minimum 1 centimetre from the left side of the image margins

MCP* joint volar

Joint space and flexor tendon. The joint space has to be placed minimum 2 centimetres from the right side and minimum 1 centimetre from the left side of the image margins.

  1. * Metacarpophalangeal joint