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Osteoporosis International

, Volume 27, Issue 4, pp 1665–1669 | Cite as

Dementia is a major risk factor for hip fractures in patients with chronic kidney disease

  • M. Maravic
  • A. Ostertag
  • P. Urena
  • M. Cohen-Solal
Short Communication

Abstract

Summary

Chronic kidney disease increases the risk of hip fractures which can be promoted by dementia. We here showed that dementia increased the risk of hip fractures in dialysis patients, but in a similar manner than without dialysis. Attention should be paid to dementia to prevent hip fractures.

Introduction

Hip fractures (HF) are associated with significant morbidity and is further increased in patients with chronic kidney disease (CKD). Dementia, frequent in CKD, might be a risk factor for HF. We here aimed to assess if dementia increased the risk of hip fracture in CKD.

Methods

The study was derived from the French National Database of Hospitalization. Data were obtained over the period 2011–2013. Three populations of subjects >60 years were extracted. Hip fractures, dialysis, and dementia were the main studied factors. The three populations were crossed to estimate the fracture risk based on dementia or dialysis, adjusted for age and gender. The fracture risk was calculated using a multiple logistic regression model.

Results

Over this period, 213,180 patients experienced a HF, 660,434 patients were diagnosed for dementia, and 47,430 patients were on dialysis. There was an effect of age and gender on the incidence of HF and dementia. In CKD patients, the risk of HF was significantly higher in demented patients compared to those without dementia: OR 2.0 [95 % CI 1.7–2.4], this being the same for men (OR 2.4 [1.8–3.1]) and women (OR 2.6 [2.0–3.3]) and at any age. However, the adjusted risk for HF in demented patients on dialysis therapy is not different than in demented patients without CKD (OR 1.3 [1.0–1.6]).

Conclusions

Dementia significantly increases the risk of HF in patients on dialysis, but this risk in demented patients is equally high whether receiving dialysis therapy or not. These results highlight dementia as a major risk factor for HF in dialysis and indicate that reduction of fracture risk should include dementia as a risk factor.

Keywords

Bone Dementia Dialysis Fracture 

Notes

Acknowledgments

This work has been supported by the Collège Français des Médecins Rhumatologues (www.cfmr.fr).

Compliance with ethical standards

Conflicts of interest

Milka Maravic has been an employee of AstraZeneca France, from 12 November 2014. AstraZeneca was not involved in this manuscript. No funding from AstraZeneca was received for this manuscript. Agnes Ostertag, Pablo Urena and Martine Cohen-Solal declared that they have no conflict of interest.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2015

Authors and Affiliations

  • M. Maravic
    • 1
  • A. Ostertag
    • 2
  • P. Urena
    • 3
    • 4
  • M. Cohen-Solal
    • 2
  1. 1.Department of RheumatologyLariboisière HospitalParisFrance
  2. 2.Inserm U1132 and University Paris-Diderot, Department of RheumatologyLariboisière HospitalParisFrance
  3. 3.Department of DialysisClinique du LandySaint-OuenFrance
  4. 4.Department of Renal Physiology, Necker HospitalUniversity of Paris DescartesParisFrance

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