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  • Title: Prevalence, incidence and progression of lumbar spondylosis by gender and age strata.
    Author: Muraki S, Yoshimura N, Akune T, Tanaka S, Takahashi I, Fujiwara S.
    Journal: Mod Rheumatol; 2014 Jul; 24(4):657-61. PubMed ID: 24252032.
    Abstract:
    OBJECTIVES: To identify the prevalence, incidence and progression of radiographic lumbar spondylosis (LS). METHODS: From the Adult Health Study conducted by the Radiation Effects Research Foundation, 1,204 participants aged 44-85 years who had lumbar spine radiographs in 1990-1992 were reexamined in 1998-2000 (mean 7.9-year interval). The radiographic severity of LS was determined by Kellgren/Lawrence (KL) grading. RESULTS: In the overall population, the prevalence of radiographic KL ≥ 2 and ≥ 3 LS was 52.9% and 23.6%, respectively. KL ≥ 2 LS was more prevalent in men, whereas KL ≥ 3 LS was more prevalent in women. During the 8-year follow-up, the incidence of KL ≥ 2 LS in men and women was 65.5% and 46.6%, that of KL ≥ 3 LS was 27.3% and 29.5%, that of progressive LS was 31.3% and 34.0%, and multilevel LS was 44.9% and 33.4%, respectively. Body-mass index was a risk factor for both KL ≥ 2 and KL ≥ 3 LS, after adjusting for age and sex. CONCLUSIONS: The present longitudinal study revealed the prevalence, incidence and progression of radiographic LS. Prevalence and incidence of KL ≥ 2 LS was higher in men than women, while, those of KL ≥ 3 were similar between men and women.
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