Table 1

Association between radiographic features (joint space narrowing, osteophytes, subchondral sclerosis, subchondral cysts, erosions, malalignment) and interphalangeal osteoarthritis, as determined by histopathology

X-ray featureDIP, p valueDIP, Pearson rPIP, p valuePIP, Pearson r
Joint space narrowing<0.00010.82970.00010.7874
Subchondral sclerosis0.01360.63130.00040.5994
Subchondral cyst0.07570.30530.06210.3725
  • Significance of the association was analysed by a 2×2 Fisher's exact test; effect sizes are provided as Pearson r.

  • DIP, distal interphalangeal; PIP, proximal interphalangeal.