Table 1 Comparison of radiographic progression scoring methods in psoriatic arthritis trials

Modified Steinbrocker [12, 13]

42 (0–168)

Hands (28)

Wrists (2)

Feet (12)

–

Typical modified Sharp used for PsA [4]

Erosion, 54; JSN, 50 (erosion, 0–270; JSN, 0–200; total, 0–470)

Hands (28)

Wrists (erosion, 14; JSN, 12)

Feet (erosion, 12; JSN, 10)

Erosion:

0 = no erosion

1 = 1 discrete erosion or < 21% of joint

2 = 2 erosions or 21–40% of joint

3 = 3 erosions or 41–60% of joint

4 = 4 erosions or 61–80% of joint

5 = extensive destruction, > 80% of joint

JSN:

0 = normal joint

1 = asymmetrical/minimal narrowing

2 = definite narrowing with loss of ≤ 50%

3 = definite narrowing with loss of 51–99%

4 = absence of joint space, ankylosis

Pencil in cup;

joint space widening

Sharp-van der Heijde for PsA [4]

52 (erosion, 0–320; JSN, 0–208; total, 0–528)

Hands (28)

Wrists (12)

Feet (12)

Erosion:

0 = no erosions

1 = discrete erosion

2 = large erosion not passing midline

3 = large erosion passing midline

Scores can be combined if > 1 erosion per joint is present for a maximum score of 5 per joint in the hands and 10 per joint in the feet

[Score of 5/10 if pencil-in-cup change or gross osteolysis present]

JSN:

0 = normal joint

1 = asymmetrical/minimal narrowing up to 25%

2 = definite narrowing with loss ≤ 50%

3 = definite narrowing with loss of 51–99% or subluxation

4 = absence of joint space, ankylosis, or complete luxation

[Score of 4 if pencil-in-cup change or gross osteolysis present]

Pencil in cup;

gross osteolysis

Psoriatic Arthritis Ratingen Score [14]

40 (destruction, 0–200; proliferation, 0–160; total, 0–360)

Hands (28)

Wrists (2)

Feet (10)

Destruction:

0 = normal

1 = ≥ 1 erosion, > 1 mm interruption of cortical plate, with up to 10% destruction of joint surface

2 = 11–25% destruction of joint surface

3 = 26–50% destruction of joint surface

4 = 51–75% destruction of joint surface

5 = > 75% joint surface destruction

Proliferation:

0 = normal

1 = bony proliferation of 1–2 mm or bone growth < 25% of original diameter

2 = bony proliferation 2–3 mm or bone growth of 25–50%

3 = bony proliferation > 3 mm or bone growth of > 50%

4 = bony ankylosis

–