Table 3.

Finger joint space width reduction estimated by computer-aided joint space analysis for distal-interphalangeal articulation

	Z-Score
Average Sharp Score for joint space narrowing	DIP (index finger)	DIP (middle finger)	DIP (ring finger)	DIP (little finger)	DIP (total)
0	-0.01 ± 1.20	-0.18 ± 1.00	-0.07 ± 1.54	-0.03 ± 0.97	-0.14 ± 1.02
1	-0.33 ± 0.71	-0.20 ± 1.30	-0.18 ± 0.72	-0.35 ± 0. 85	-0.22 ± 0.78
2	-0.53 ± 1.27	-0.34 ± 1.02	-0.37 ± 1.06	-0.41 ± 1.03	-0.39 ± 0.77
3	-0.66 ± 1.28	-0.76 ± 1.35	-0.64 ± 1.61	-0.50 ± 1.71	-0.61 ± 1.18
Difference between score 0 and 3	0.65 ± 0.37	0.58 ± 0.38	0.57 ± 0.47	0.47 ± 0.47	0.47 ± 0.34
Significance, P	NS	NS	NS	NS	NS

Data presented as mean ± standard deviation. Reduction of finger joint space widths from score 0 to 3 using the average Sharp-van der Heijde score as estimated by computer-aided joint space analysis for the distal-interphalangeal (DIP) articulation. NS, not significant.