CERVICAL OUTCOME MEASURE
NDI Clinical Pro
Standardized Neck Disability & Functional Impairment HUD
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Scoring Interpretation
0-8%
None
None
10-28%
Mild
Mild
30-48%
Mod
Mod
50-68%
Severe
Severe
70%+
Complete
Complete
Clinical Significance of the NDI
The Neck Disability Index (NDI) is the standard instrument for documentation of functional progress in patients with cervical radiculopathy, whiplash, and mechanical neck pain.
Frequently Asked Questions
What is the MCID for the NDI?
The Minimal Clinically Important Difference (MCID) is **5 points** (out of 50). Changes smaller than this may not be perceptible to the patient or clinically relevant.
Can the NDI be used for post-surgical patients?
Yes, it is highly validated for assessing functional outcomes following anterior cervical discectomy and fusion (ACDF) and other cervical spine surgeries.
Clinical Bibliography
- 1. Vernon H, Mior S. The Neck Disability Index. J Manip Physiol Ther. 1991.
- 2. MacDermid JC, et al. Reliability of the NDI. JOSPT. 2009.
Dr. Nikhil Mahajan, PT
CLINICAL RESOURCE