Sundt identified criteria for the outcome in a patient with Legg-Calve-Perthes disease. This help identify a patient at risk for osteoarthritis and functional disability. This scale was used by Catterall in his review of the disorder.
Parameters:
(1) symptoms
(2) range of motion and function
(3) radiological appearance
Symptoms
Functional Ability
Outcome
none
full range of motion
good
none
some restriction, especially in medial rotation
fair
symptomatic
restricted, especially for rotation
poor
Radiological Appearance
Femoral Head
Loss in Epiphyseal Height
Adaptive Changes in Acetabulum
Outcome
round and contained within the acetabulum
no or mild, with no increase in medial joint space
none
good
round but broadened; it may not be fully contained in the acetabulum, with <=20% uncovered
loss always present
mild to moderate
fair
femoral head flattened, broad and irregular; > 20% uncovered
loss with widening of the medial joint space
moderate to marked
poor
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