Expanded Disability Status Scale (EDSS) / Functional Systems Score (FSS)

EDSS / FSS Calculator
EDSS Grade
EDSS Score: –
Awaiting input
Select an EDSS grade.
Describes severity of disability in patients with MS.

Formula

EDSS: Points assigned based on level of disability. FSS: Addition of selected points within body system. The Expanded Disability Status Scale (EDSS) works together with the Functional Systems Scale (FSS) to measure MS disease progression. The EDSS assesses the disability status of MS patients on a scale from 0 to 10. Scores from 0 to 3.5 are determined by deficits in eight Functional Systems (FS) in patients who do not have any impairment of ambulation. Scores from 4.0 to 10.0 are determined both by ambulatory ability and FS deficits, which typically correlate with each other. Some providers use only the ambulatory score to determine the overall EDSS score between 4.0 and 10.0. In situations when there is subjectivity and FS deficits do not correspond to a specific EDSS level, a range is provided.

Pearls / Pitfalls

The Expanded Disability Status Scale (EDSS) works together with the Functional Systems Scale (FSS) to measure MS disease progression. The EDSS assesses the disability status of MS patients on a scale from 0 to 10. Scores from 0 to 3.5 are determined by deficits in eight Functional Systems (FS) in patients who do not have any impairment of ambulation. Scores from 4.0 to 10.0 are determined both by ambulatory ability and FS deficits, which typically correlate with each other. Some providers use only the ambulatory score to determine the overall EDSS score between 4.0 and 10.0. In situations when there is subjectivity and FS deficits do not correspond to a specific EDSS level, a range is provided.

Advice

Use to measure progression of disease in MS patients. Use to compare outcomes in MS clinical trials.

More Information

Score of 1.0 to 4.5 -- Normal ambulation. Score of 5.0 to 9.5 -- Impaired ambulation.

Similar Posts