Table 1 The Mankin score.

From: Elucidation of the treatment mechanism of pulsed radiofrequency based on its antiinflammatory effects

Modified Mankin score

Structure

Matrix staining

Normal

0

Normal slight reduction

0

Surface irregularities

1

Slight reduction

1

Pannus and surface irregularities

2

Moderate reduction

2

Clefts to transitional zone

3

Severe reduction

3

Clefts to calcified zone

4

No staining

4

Complete disorganization

5

 

Cellular abnormalities

Normal

0

Diffuse hypercellularity

1

Tidemark integrity

Clusters

2

Intact

0

Hypocellularity

3

Destroyed

1

  1. The sectional edges of the cartilage were not used because of the high artifacts. Disorganization should occur in at least 25% of sections.
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