Normal values for sagittal spinal alignment: a study of Brazilian subjects
Clinics
;
73: e647, 2018. tab, graf
Article
in English
| LILACS
| ID: biblio-974938
ABSTRACT
OBJECTIVES:
The purpose of this study is to investigate the normal values of and chain of correlations between spinopelvic parameters in a Brazilian population.METHODS:
This is a prospective observational study including asymptomatic adult subjects who had full spinal radiographs performed. The subjects were stratified by age into 3 groups (18-39 years old, 40-59 years old, and >60 years old), and radiographic parameters were compared across age groups and gender using ANOVA and Student's t-test, respectively. The relationships between various radiographic parameters were evaluated with Pearson correlation coefficients.RESULTS:
One hundred and thirty asymptomatic volunteers (mean age, 48 years) met the inclusion criteria. The mean sagittal parameters in a normal Brazilian population were as follows lumbar lordosis (LL) of 56.8°, pelvic tilt (PT) of 12.4°, pelvic incidence (PI) of 49.4°, PI-LL of -7.4°, T1 pelvic angle (TPA) of 8°, sagittal vertical axis (SVA) of -0.54 cm and T1 slope of 25.2°. Subjects ≥60 years old had significantly higher values of SVA (p=0.024) and TPA (p=0.009) than the two younger age groups. The TPA was significantly correlated with the following spinopelvic parameters LL (r=-0.172, p=0.005), PT (r=0.776, p<0.001), PI (r=0.508, p<0.001), PI-LL (r=0.717, p<0.001), SVA (r=0.409, p<0.001) and T1 slope (r=0.172, p=0.050).CONCLUSION:
This study demonstrated significant physiologic trunk inclination with increasing age. The TPA, an angular parameter of global spinal alignment, presented a chain of correlations with different spinal segments.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Spine
Type of study:
Diagnostic study
/
Observational study
/
Risk factors
Limits:
Adolescent
/
Adult
/
Aged
/
Humans
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Clinics
Journal subject:
Medicine
Year:
2018
Type:
Article
Affiliation country:
Brazil
/
United States
Institution/Affiliation country:
Hospital do Servidor Publico Estadual de Sao Paulo/BR
/
Hospital for Special Surgery/US
/
State University of New York (SUNY)/US
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