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Rev. bras. ortop ; 51(5): 583-588, Sept.-Oct. 2016. tab
Article in English | LILACS | ID: biblio-830005

ABSTRACT

ABSTRACT OBJECTIVE: To compare serum 25-hydroxyvitamin D (25[OH]D) levels, a serum marker of vitamin D3, between patients with and without proximal hip fracture. METHODS: This was a case-control study in which serum samples of 25(OH)D were obtained from 110 proximal hip fracture inpatients and 231 control patients without fractures, all over 60 years of age. Levels of 25(OH)D lower than or equal to 20 ng/mL were considered deficient; from 21 ng/mL to 29 ng/mL, insufficient; and above 30 ng/mL, sufficient. Sex, age, and ethnicity were considered for association with the study groups and 25(OH)D levels. RESULTS: Patients with proximal hip fracture had significantly lower serum 25(OH)D levels (21.07 ng/mL) than controls (28.59 ng/mL; p = 0.000). Among patients with proximal hip fracture, 54.5% had deficient 25(OH)D levels, 27.2% had insufficient levels, and only 18.2% had sufficient levels. In the control group, 30.3% of patients had deficient 25(OH)D levels, 30.7% had insufficient levels, and 38.9% had sufficient levels. Female patients had decreased serum 25(OH)D levels both in the fracture group and in the control group (19.50 ng/mL vs. 26.94 ng/mL; p = 0.000) when compared with male patients with and without fracture (25.67 ng/mL vs. 33.74 ng/mL; p = 0.017). Regarding age, there was a significant association between 25(OH)D levels and risk of fracture only for the age groups 71-75 years and above 80 years. CONCLUSION: Patients with proximal hip fracture had significantly decreased serum 25(OH)D levels when compared with the control group. Female patients had significantly lower serum 25(OH)D levels in both groups.


RESUMO OBJETIVO: Comparar os níveis séricos de 25-hidroxivitamina D [25(OH)D], marcador sérico da vitamina D3, entre pacientes com e sem fratura da extremidade proximal do fêmur (FEPF). MÉTODOS: Estudo caso-controle em que foram obtidas amostras séricas de 25(OH)D de 110 pacientes com FEPF internados e de 231 pacientes de grupo controle que não apresentaram fraturas, todos acima de 60 anos. Níveis de 25(OH)D menores ou iguais a 20 ng/mL foram considerados deficitários; entre 21 ng/mL e 29 ng/mL, insuficientes; e acima de 30 ng/mL, suficientes. Foram consideradas as variáveis sexo, idade e etnia para associação com os grupos em estudo e os níveis de 25(OH)D. RESULTADOS: Pacientes com FEPF apresentaram níveis séricos de 25(OH)D significativamente inferiores (21,07 ng/mL) comparados com os do grupo controle (28,59 ng/mL; p = 0,000). Entre os pacientes com FEPF, 54,5% apresentaram níveis de 25(OH)D deficitários, 27,2% insuficientes e apenas 18,2% suficientes. Já no grupo controle, 30,3% dos pacientes apresentaram níveis deficitários, 30,7% insuficientes e 38,9% suficientes. Pacientes do sexo feminino apresentaram níveis séricos de 25(OH)D reduzidos tanto no grupo com fratura quanto no grupo controle (19,50 vs. 26,94 ng/mL; p = 0,000) comparados com os do sexo masculino com e sem fratura (25,67 vs. 33,74 ng/mL; p = 0,017). Quanto à idade, houve associação significativa entre os níveis de 25(OH)D e risco de fratura apenas para as faixas 71-75 anos e acima de 80. CONCLUSÃO: Pacientes com FEPF apresentaram níveis séricos de 25(OH)D significativamente reduzidos em comparação com os do grupo controle. Pacientes do sexo feminino apresentaram níveis séricos de 25(OH)D significativamente menores em ambos os grupos.


Subject(s)
Humans , Male , Female , Aged , Hip Fractures , Osteoporotic Fractures , Vitamin D Deficiency
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