Marx Activity Rating Scale
Marx activity rating scale (Marx 2001): running, cutting, deceleration, and pivoting each 0-4 for a 0-16 knee-demand rating.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Running
- 4
- Cutting
- 3
- Deceleration
- 3
- Pivoting
- 2
Result: Marx activity rating 12 of 16 — higher = more knee demand.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-16
- Running + cutting + deceleration + pivoting, each 0-4. Higher = greater functional demand on the knee. An activity rating, not a diagnosis.
What you enter
- Running
- Cutting
- Deceleration
- Pivoting
How this is calculated
Marx RG, Stump TJ, Jones EC, Wickiewicz TL, Warren RF. Development and evaluation of an activity rating scale for disorders of the knee. Am J Sports Med. 2001;29(2):213-218. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.