TableĀ 2

Distribution of most common clinically swollen joints and joints with ultrasonographic inflammation

Clinically swollen jointsJoints with ultrasonographic synovitis
Seronegative patients
N=36 patients, 72 joints
Seropositive patients
N=198 patients, 396 joints
Seronegative patients
N=34 patients, 68 joints
Seropositive patients
N=194 patients, 388 joints
JointPercentage affected
(ordered according to frequency) (%)
JointPercentage affected
(ordered according to frequency) (%)
JointPercentage affected
(ordered according to frequency) (%)
JointPercentage affected
(ordered according to frequency) (%)
Wrist75.0MTP343.2Wrist82.4MTP338.1
MCP366.7MTP241.7MCP273.5Wrist37.9
MCP265.3PIP240.9MCP363.2MTP237.9
PIP361.1MCP240.4MCP155.9MCP233.3
MCP159.7PIP338.1MCP448.5MTP130.8
PIP256.9Wrist32.8MTP245.6MCP126.8
MTP354.2MCP330.3PIP245.6MTP426.5
PIP451.4MCP129.8PIP344.1MCP322.9
MTP251.4MTP428.3MCP544.1PIP222.7
MCP548.6PIP420.5MTP141.2MTP521.9
  • The 10 most frequently affected joints are presented. Joints were assessed bilaterally and analysed on an aggregated level.

  • MCP, meatacarpophalangeal; MTP, metatarsophalangeal; PIP, proximal interphalangeal.