Table 1

Features of new bone formation (NBF) in patients with gout.

Number of joints with XR NBF features (number = 798 joints)

Mean (SD) number of joints with XR NBF features (number = 20 patients)

Number of joints with CT NBF features (number = 798 joints)

Mean (SD) number of joints with CT NBF features (number = 20 patients)

Spur

76 (9.5%)

3.8 (5.7)

141 (17.6%)

7.1 (7.9)

Osteophyte

167 (20.9%)

8.4 (6.5)

243 (30.5%)

12.2 (7.7)

Periosteal NBF

51 (6.4%)

2.6 (3.4)

48 (6.0%)

2.4 (3.4)

Ankylosis

7 (0.9%)

0.35 (1.1)

5 (0.6%)

0.25 (3.4)

Sclerosis

207 (25.9%)

10.4 (8.9)

228 (28.6%)

11.4 (8.3)

CT, computed tomography; SD, standard deviation; XR, plain radiography.

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