Characteristics and risk factors of bone mineral density decrease in 110 patients with ankylosing spondylitis: a retrospective study

ZHANG Qiang; DENG Weizhe; WEI Bo; SHEN Zhengdong; ZHANG Hao

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Medical Journal of the Chinese People Armed Police Forces ›› 2024, Vol. 35 ›› Issue (6) : 488-492.

Characteristics and risk factors of bone mineral density decrease in 110 patients with ankylosing spondylitis: a retrospective study

ZHANG Qiang¹, DENG Weizhe¹, WEI Bo¹, SHEN Zhengdong², ZHANG Hao³

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Abstract

Objective To analyze the clinical characteristics and risk factors of decreased bone mineral density (BMD) in patients with ankylosing spondylitis (AS). Methods A total of 110 AS patients admitted to the 962nd Hospital of PLA Joint Logistics Support Force from January 2017 to November 2023 were reviewed. DXA method was used to measure BMD and the patients were divided into normal group(T-score＞-1) and decreased group(T-score≤-1).The characteristics associated with decreased BMD were analyzed using univariate analysis, and the risk factors of decreased BMD were examined using multivariate logistic regression analysis. Results The median age of AS patients in Heilongjiang Province was 25.50(21.00,32.00) years,and the median disease duration was 1.00(0.70,3.00) years, with 109 male and 1 female. BMD was normal in 74 cases, and BMD decreased in 36 cases, including low bone mass in 32 cases and osteoporosis in 4 cases. A total of 62 cases received recombinant human tumor necrosis factor receptor type Ⅱ antibody fusion protein. Univariate analysis showed that age, disease course,CRP,and ESR were associated with BMD decrease(P<0.05). Multivariate logistic analysis indicated that age(OR=1.14,95%CI:1.05～1.25),CRP(OR=1.09,95%CI:1.02～1.15),and ESR(OR=1.03,95%CI:1.00～1.07)were risk factors for BMD decrease,and recombinant human tumor necrosis factor receptor type II antibody fusion protein(OR=0.27,95%CI:0.10～0.76)was a protective factor against BMD decrease. Conclusions Age,CRP and ESR are risk factors for BMD decrease in patients with AS, while recombinant human tumor necrosis factor receptor type Ⅱ antibody fusion protein acts as a protective factor against BMD decrease.

Key words

ankylosing spondylitis / bone mineral density / osteoporosis / DXA / risk factor

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ZHANG Qiang, DENG Weizhe, WEI Bo, SHEN Zhengdong, ZHANG Hao. Characteristics and risk factors of bone mineral density decrease in 110 patients with ankylosing spondylitis: a retrospective study[J]. Medical Journal of the Chinese People Armed Police Forces. 2024, 35(6): 488-492

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