Measurement of Spinopelvic parameters in healthy Ethiopian Adults: a cross-sectional study.
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Date
2025
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Addis Ababa University
Abstract
Background: Spinopelvic alignment plays an important role in understanding spinal biomechanics and planning for surgical interventions to achieve best outcome and avoid complications. Restoration of spinopelvic balance during spinal surgery is very important to ensure a good outcome. Many studies have been conducted on normal range of spinopelvic parameters globally and are found to be population specific. Despite these values known to be different across populations, there was no established normal values for Ethiopian adults. This Study defined normal range of spinopelvic parameters in healthy Ethiopian Adults.
Objectives: This study aimed to determine the normal range of key spinopelvic parameters in healthy Ethiopian adults and to analyze the correlations between these parameters and demographic factors such as age and sex.
Methods: An observational cross-sectional study was conducted on healthy Ethiopian adult volunteers who visited TASH for various reasons other than hip and spine pathologist. It was conducted at TASH from August 2025 to December 2025. Standing single lateral lumbosacral radiography was obtained under standard conditions after informed consent taken. Two spine surgeons independently measured pelvic incidence, sacral slope, pelvic tilt and lumbar lordosis.
Result: in this study, a total of 102 volunteers participated, of whom 55 males and 47 females with median age of 38. The mean values of PI, SS, PT and LL were 52.8 ± 9.5°, 39.3 ± 7.8°,13.3 ± 7.3° and 42.4 ± 10.4° respectively. Females show higher values in all parameters.PT and PI-LL show correlations with age. Strongest association was noted between LL and SS.
Conclusions: this is the first study that determine normal range of spinopelvic parameters in healthy Ethiopian adults. All parameters were higher in females. PT and PI-LL increase with age. Our spinopelvic parameters values differ across different studies due to ethnic variations as determined by various studies.
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Spinopelvic parameters, normal range, pelvic incidence, sacral tilt, pelvic tilt, lumbar lordosis, Ethiopia