Protocol for Systematic Review: Peak Bone Mass Pattern in Different Parts of the World

Mohammadi, Zahra; Ebrahimi, Mehdi; Keshtkar, Abbasali; Meybodi, Hamidreza Aghaei; Khashayar, Patricia; Jouy, Zahra; Bayegi, Fereshteh; shojaa, Mahdieh; Ghodsi, Maryam; Djalalinia, Shirin

doi:10.4172/2155-9627.1000211

Cited by 1 publication

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“…Skeletal maturation differs from one site to another (9), but generally, bone mass peaks in mid-thirties, regardless of the skeletal site or sex (10). Peak bone mineral content (BMC) velocity appears approximately six months after peak height velocity, the latter taking place among girls at approximately 12 years and among boys at 13.5 years (9).…”

Section: Introductionmentioning

confidence: 99%

Changes in vertebral dimensions in early adulthood – A 10-year follow-up MRI-study

Autio

Oura

Karppinen

et al. 2019

Bone

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Previous studies have shown that vertebral height increases until the early twenties, but very few studies have been conducted on other vertebral dimensions. Growth in vertebral size is believed to take place in elderly age but not in early adulthood. In this study, we wanted to clarify the potential changes in the dimensions of the lumbar vertebrae during early adulthood. We used the Northern Finland Birth Cohort 1986 as our study material, with a final sample size of 375 individuals. We performed lumbar magnetic resonance imaging (MRI) when the participants were 20 and 30 years of age (baseline and follow-up, respectively). We recorded the width, depth, height, and cross-sectional area (CSA) of the fourth lumbar vertebra (L4) using the MRI scans. We used generalized estimating equation (GEE) models to analyse the data. Men had 7.6%-26.5% larger vertebral dimensions than women at both baseline and follow-up. The GEE models demonstrated that all the studied dimensions increased during the follow-up period among both sexes (p < 0.001). Men had a higher growth rate in vertebral depth and CSA than women (p < 0.001). Among women, small vertebral width (p = 0.001), depth (p = 0.05) and height (p = 0.02) at baseline were associated with a higher vertebral growth rate during the follow-up than among those with large dimensions at baseline. Among men, small baseline width was associated with higher vertebral growth rate (p = 0.001). Our results clearly indicate that vertebral dimensions increase after 20 years of age among both sexes.

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Section: Introductionmentioning

confidence: 99%