Table 2

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

Z-Score


Average Sharp Score for joint space narrowing

PIP (index finger)

PIP (middle finger)

PIP (ring finger)

PIP (little finger)

PIP (total)


0

0.18 ± 0.84

0.05 ± 0.43

0.02 ± 0.51

0.02 ± 0.91

0.01 ± 0.46

1

-0.34 ± 1.06

-0.25 ± 1.11

-0.11 ± 0.47

-0.28 ± 0.97

-0.27 ± 0.65

2

-0.47 ± 1.02

-0.43 ± 1.12

-0.41 ± 1.08

-0.35 ± 1.06

-0.42 ± 0.79

3

-1.05 ± 1.08

-1.02 ± 0.39

-0.71 ± 1.27

-0.65 ± 1.40

-0.95 ± 1.14

Difference between score 0 and 3

1.23 ± 0.31

1.07 ± 0.42

0.73 ± 0.35

0.67 ± 0.29

0.96 ± 0.31

Significance, P

<0.01

<0.05

<0.05

<0.05

<0.05


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 proximal-interphalangeal (PIP) articulation.

Pfeil et al. Arthritis Research & Therapy 2013 15:R27   doi:10.1186/ar4163

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