Table 5

Sites of NBF and other features of gout on CT.

Distal interphalangeal joints

Proximal interphalangeal jointsa

Metacarpophalangeal joints

Carpal region

Radius and ulna


Spur

12.5 (21.1)

20.0 (22.7)

18.0 (25.5)

16.3 (26.6)

24.8 (32.9)

Osteophyte

23.1 (25.1)

41.0 (23.2)

24.5 (24.2)

33.1 (32.3)

27.5 (30.2)

Periosteal NBF

1.9 (6.1)***

6.0 (10.5)*

2.5 (5.5)**

9.4 (16.1)

16.3 (23.3)

Ankylosis

0.0 (0.03)

1.5 (3.7)

0.0 (0.0)

0.6 (2.8)

0.0 (0.0)

Sclerosis

18.1 (23.5)**

35.0 (25.2)

23.5 (25.8)*

30.6 (28.8)

41.3 (33.7)

Erosion

20.9 (22.6)*

35.8 (26.4)

26.5 (29.8)

29.4 (31.5)

41.3 (40.8)

Tophus

21.4 (26.7)*

39.3 (31.2)

34.0 (36.6)

29.4 (32.5)

41.3 (43.9)


aIncludes IP joint of the thumb. *P < 0.05 compared with radius/ulna, **P < 0.01 compared with radius/ulna, ***P < 0.001 compared with radius/ulna. All P refer to Tukey's post hoc test. Data are expressed as a mean (standard deviation) percentage of sites per patient to account for the different number of joints at each site. CT, computed tomography; NBF, new bone formation.

Dalbeth et al. Arthritis Research & Therapy 2012 14:R165   doi:10.1186/ar3913

Open Data