Fracture risk in chronic kidney disease: A Korean population-based cohort study

Young Eun Kwon1, Hyung Yun Choi2, Sol Kim1

  • 1Department of Internal Medicine, Myongji Hospital, Hanyang University College of Medicine, Goyang, Korea.

Insights

Patients with end-stage renal disease (ESRD) on dialysis face higher fracture risks than pre-dialysis chronic kidney disease (CKD) patients. Phosphate binders are associated with a reduced fracture risk in ESRD patients, highlighting their importance in managing bone health.

Area of Science:

  • Nephrology
  • Orthopedics
  • Pharmacology

Background:

  • Chronic kidney disease (CKD)-mineral and bone disorder (MBD) is linked to declining kidney function and increased fracture risk.
  • Phosphate binder use is a cornerstone in managing hyperphosphatemia within CKD-MBD.
  • Understanding fracture risk differences between pre-dialysis and dialysis patients is crucial for patient care.

Purpose of the Study:

  • To compare fracture risk in pre-dialysis CKD patients versus end-stage renal disease (ESRD) patients on dialysis.
  • To investigate the impact of phosphate binders on fracture risk specifically in ESRD patients.

Main Methods:

  • Retrieved data from 89,533 CKD patients (2012-2016) from the Health Insurance Review and Assessment Service Database.
  • Analyzed CKD diagnosis, dialysis status, fracture history, and phosphate binder prescription history.
  • Employed multivariate Cox regression analyses to assess associations between dialysis, phosphate binders, and fracture risk.

Main Results:

  • Fracture rates were 74 per 1,000 patient-years in pre-dialysis CKD and 84 per 1,000 patient-years in dialysis patients.
  • ESRD patients on dialysis exhibited a significantly higher fracture risk (HR, 1.16; P < 0.001) compared to pre-dialysis CKD patients.
  • Patients not taking phosphate binders had a 20.0% higher fracture risk than those on phosphate binders.

Conclusions:

  • Fractures are more common in ESRD patients undergoing dialysis than in pre-dialysis CKD patients.
  • Phosphate binder therapy is linked to a decreased risk of fractures in ESRD patients.
  • These findings underscore the importance of managing mineral and bone disorders in CKD patients to mitigate fracture risk.
Abstract

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