Wiltse Classification (Spondylolisthesis)
The Wiltse-Newman-Macnab classification of spondylolisthesis, by etiology, types I/II/III/IV/V.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Wiltse type
- II - isthmic (pars lesion)
Result: Wiltse type II: isthmic, a lesion in the pars interarticularis (the most common type in younger patients).
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What the result means
- Type I
- Dysplastic: congenital dysplasia of the L5-S1 articulation.
- Type II
- Isthmic: a pars interarticularis lesion (IIA lytic, IIB elongated, IIC acute fracture).
- Type III
- Degenerative: long-standing intersegmental instability with facet remodeling.
- Type IV
- Traumatic: acute fracture of a posterior element other than the pars.
- Type V
- Pathologic: generalized or localized bone disease.
What you enter
- Wiltse type
How this is calculated
Wiltse LL, Newman PH, Macnab I. Classification of spondylolysis and spondylolisthesis. Clin Orthop Relat Res. 1976;(117):23-29. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.