CTS-6 (Carpal Tunnel Syndrome Clinical Diagnosis)
CTS-6 (Graham 2006): six-item clinical diagnostic score for carpal tunnel syndrome.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Numbness mainly or only in the median nerve territory
- Yes
- Numbness at night
- Yes
- Positive Phalen test
- Yes
Result: CTS-6 12.5 of 26 - high likelihood of carpal tunnel syndrome.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Above 12
- Roughly an 80 percent probability of carpal tunnel syndrome.
- Above 5
- Roughly a 25 percent probability, rising with the total.
- Scope
- A probability of clinical diagnosis. Not a nerve conduction study, not a severity grade, and not an order for splinting, injection or surgery.
What you enter
- Numbness mainly or only in the median nerve territory (3.5)
- Numbness at night (4)
- Thenar atrophy or weakness (5)
- Positive Phalen test (5)
- Loss of 2-point discrimination in the median territory (4.5)
- Positive Tinel sign (4)
How this is calculated
- Weights
- median-territory numbness 3.5, nocturnal numbness 4, thenar atrophy or weakness 5, positive Phalen 5, loss of 2-point discrimination 4.5, positive Tinel 4; maximum 26.
Graham B, Regehr G, Naglie G, Wright JG. Development and validation of diagnostic criteria for carpal tunnel syndrome. J Hand Surg Am. 2006;31(6):919-924. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.