Greene et al developed a simple classification system for roentgenographic changes in hemophilic arthropathy. This can be used to monitor the patient over time. The authors are from the University of North Carolina at Chapel Hill.
Primary use: evaluation of the knees
Parameters:
(1) subchondral irregularities
(2) joint space narrowing
(3) incongruity along the joint surfaces
(4) erosions at the joint margins
|
Parameter |
Finding |
Points |
|
subchondral irregularities |
none |
0 |
|
|
mild (<= 50% of the joint surface) |
1 |
|
|
moderate to severe (pronounced, > 50% of the joint surface) |
2 |
|
narrowing in the joint space |
none |
0 |
|
|
<= 50% of joint space |
1 |
|
|
> 50% of joint space |
2 |
|
incongruities along the joint surface |
none |
0 |
|
|
mild |
1 |
|
|
moderate to severe (pronounced) |
2 |
|
erosions at the joint edges |
absent |
0 |
|
|
present |
1 |
total score =
= SUM(points for the 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 7
• The higher the score the more severe the arthropathy.
|
Total Score |
Mean Torque for Knee Extension |
|
0 |
115 Newton-meters |
|
1 to 3 |
79 Newton-meters |
|
4 or 5 |
52 Newton-meters |
|
6 or 7 |
35 Newton-meters |
Specialty: Surgery, orthopedic
