Can Retrolisthesis and Anterolisthesis Be Hereditary?
Yes, spondylolisthesis (which includes anterolisthesis) has a clear hereditary component, particularly the dysplastic (congenital) type, with first-degree relatives having up to a 33% risk of developing the condition. However, the evidence specifically addressing retrolisthesis heritability is limited, with most data suggesting it develops through degenerative mechanisms rather than genetic inheritance.
Hereditary Evidence for Anterolisthesis (Spondylolisthesis)
The strongest evidence comes from a radiographic family survey that examined 147 first-degree relatives of 47 patients with spondylolisthesis 1. This study revealed:
- Dysplastic (congenital) type: 33% of first-degree relatives were affected
- Isthmic type: 15% of first-degree relatives were affected
- Both figures significantly exceed general population frequencies (under 1% for dysplastic, 5% for isthmic types)
The one-in-three risk for relatives of patients with dysplastic spondylolisthesis is clinically significant and warrants early screening of siblings and children 1.
Associated Genetic Conditions
Certain genetic disorders demonstrate clear hereditary spinal instability patterns. Achondroplasia, caused by mutations in the FGFR3 gene, leads to characteristic spinal deformities including vertebral body abnormalities, shortened pedicles, and spinal instability that can result in anterolisthesis 2. While most cases occur spontaneously, achondroplasia follows an autosomal dominant inheritance pattern.
Retrolisthesis: Predominantly Degenerative
The available evidence suggests retrolisthesis develops primarily through degenerative mechanisms rather than hereditary factors 3, 4. Key pathophysiologic findings include:
- Long-standing lower lumbar spine bending forces against the posterior ligamentous complex
- Predisposing factors: negatively sloped sacrum and increased lumbar flexibility
- Association with disc degeneration and loss of disc height 4
No studies in the provided evidence demonstrate familial clustering or genetic inheritance patterns for retrolisthesis specifically.
Clinical Implications
For Anterolisthesis/Spondylolisthesis:
- Screen first-degree relatives of patients with dysplastic spondylolisthesis, especially children
- Look for associated findings: spina bifida occulta at L5-S1 (present in 94% of dysplastic cases, 32% of isthmic cases) 1
- Early recognition allows for preventive monitoring and intervention
For Retrolisthesis:
- Focus on identifying degenerative risk factors rather than family history
- Assess biomechanical factors: sacral slope, lumbar flexibility, presence of adjacent level spondylolisthesis 4
Important Caveat
The 1979 family survey found no instances of neural tube defects (anencephaly, spina bifida with meningocele) among 826 relatives across three generations 1. This indicates that while spondylolysis has hereditary components, it is not etiologically related to neural tube defects despite the association with spina bifida occulta.