Manual Muscle Testing-8 (MMT-8)
Manual Muscle Testing-8 (IMACS myositis core measure): 8 muscle groups each graded 0-10 on the Kendall scale; total 0-80, higher = stronger.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Neck flexors
- 8
- Deltoid (middle)
- 8
- Biceps
- 8
- Wrist extensors
- 8
- Gluteus maximus
- 8
- Gluteus medius
- 8
- Quadriceps
- 8
- Ankle dorsiflexors
- 8
Result: MMT-8 score 64 of 80 — higher = stronger.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-80
- 8 muscle groups each 0-10 (Kendall scale); higher = stronger. A strength score, not a diagnosis.
What you enter
- Neck flexors (0-10)
- Deltoid (middle) (0-10)
- Biceps (0-10)
- Wrist extensors (0-10)
- Gluteus maximus (0-10)
- Gluteus medius (0-10)
- Quadriceps (0-10)
- Ankle dorsiflexors (0-10)
How this is calculated
Rider LG, Werth VP, Huber AM, et al. Measures of adult and juvenile dermatomyositis, polymyositis, and inclusion body myositis (MMT-8; IMACS). Arthritis Care Res. 2011;63(Suppl 11):S118-S157. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.