TABLE 2.

Frequency and Distribution of Positive Joints on 18F-FDG TB PET/CT

Positive joint count/no. of participants (average)
Joint groupSpecific joint(s)Non-AIAAIA
Hand jointsFirst IP and 2-fifth PIP6/2 (3.0)82/17 (4.8)
1st-5th MCP1/1 (1.0)71/15 (4.7)
2nd-5th DIP0/0 (0)38/10 (3.8)
Sum7/2 (3.5)191/20 (9.6)
Feet jointsFirst IP, 2nd-5th PIP and DIP0/0 (0)15/5 (3.0)
1st-5th MTP4/3 (1.3)41/10 (4.1)
Sum4/3 (1.3)56/11 (5.1)
Upper limb jointsGleno-humeral6/4 (1.5)37/21 (1.8)
Acromio-clavicular3/2 (1.5)23/13 (1.8)
Sterno-clavicular3/3 (1.0)26/17 (1.5)
Elbows3/2 (1.5)11/8 (1.4)
Wrists4/2 (2.0)31/19 (1.6)
Sum19/5 (3.8)128/22 (5.8)
Lower limb jointsHips5/3 (1.7)22/13 (1.7)
Knees1/1 (1.0)20/14 (1.4)
Talo-tibial3/2 (1.5)20/12 (1.7)
Midtarsal and subtalar0/0 (0)17/12 (1.4)
Sum9/4 (2.3)79/21 (3.8)
Temporomandibular joints0/0 (0)9/6 (1.5)
Sum of all positive joints/participants (average)39/6 (6.5)463/23 (20.1)
  • Data in parentheses are percentages.

  • IP = interphalangeal; PIP = proximal interphalangeal; MCP = metacarpophalangeal; DIP = distal interphalangeal; MTP = metatarsophalangeal.