mJOA (cervical myelopathy)
modified Japanese Orthopaedic Association score (Benzel 1991): upper- and lower-extremity motor, upper-extremity sensory, and sphincter grades → 0–18 cervical-myelopathy severity.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Motor — upper extremity
- 4
- Motor — lower extremity
- 5
- Sensory — upper extremity
- 2
- Sphincter / bladder
- 2
Result: mJOA 13/18 — moderate cervical myelopathy.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Domains
- Motor UE 0–5, motor LE 0–7, sensory UE 0–3, sphincter 0–3; total 0–18. Higher is better (18 = no dysfunction), the opposite of most scores.
- Severity
- Mild ≥ 15, moderate 12–14, severe ≤ 11.
What you enter
- Motor — upper extremity
- Motor — lower extremity
- Sensory — upper extremity
- Sphincter / bladder
How this is calculated
Benzel EC, Lancon J, Kesterson L, Hadden T. Cervical laminectomy and dentate ligament section for cervical spondylotic myelopathy. J Spinal Disord. 1991;4(3):286-295. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.