ArticleShoulder & elbow2022
Glenoid version: the role of genetic and environmental factors on its variability. An MRI study on asymptomatic elderly twins.
Article in Shoulder & elbow, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Acromial Osteotomy for Dynamic Posterior Shoulder Instability.Arthroscopy techniques · 2026Article
- Article
- Glenoid morphology variation between patients with hypermobile shoulder joints and controls: Identification of hyperlaxity-related morphologic bone changes.Research in diagnostic and interventional imaging · 2024Article
- Posterior Shoulder Instability in Tennis Players: Aetiology, Classification, Assessment and Management.International journal of sports physical therapy · 2023Article
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5 authors.
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Abstract
backgroundGlenoid version is the most variable parameter of the shoulder joint. No authors investigated if intrinsic genetic factors or influences from extrinsic sources are responsible for its variability.
aimWe compared glenoid version between elderly monozygotic and dizygotic twins intending to separate the contributions of genetics from shared and unique environments.
methodsGlenoid version of the dominant shoulder was assessed by MRI using Friedman's method in 30 pairs of elderly twins (16 monozygotic-14 dizygotic; mean age ± SD: 63.72 ± 3.37, 53-72). Heritability was estimated as twice the difference between the intraclass correlation coefficients for monozygotic and dizygotic pairs. The influence of shared environment was calculated as the difference between monozygotic correlation coefficient and the heritability index. According to job category, one way analysis of variance was used to estimate the differences between groups in the total sample and within zygosity groups.
resultsGlenoid version angle in monozygotic and dizygotic twins was -2° (SD: 2°) and -3° (SD: 3°), respectively (p = 0.334). Heritability index was 0.98, while the contributions of shared and unique environment were 0 and 0.02, respectively. According to working classes, no significant differences were found between the groups (p = 0.732, F = 0.31).
conclusionsGlenoid version is mainly genetically determined and only marginally influenced by environments.
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