Pediatric Gastroenterology, Hepatology & Nutrition

The Korean Society of Pediatric Gastroenterology, Hepatology and Nutrition (대한소아소화기영양학회)
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Prevalence and Associated Factors of Vertebral Fractures in Children with Chronic Liver Disease with and without Liver Transplantation

  • Wittayathorn Pornsiripratharn (Division of Gastroenterology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Suporn Treepongkaruna (Division of Gastroenterology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Phatthawit Tangkittithaworn (Department of Radiology, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Niyata Chitrapaz (Department of Radiology, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Chatmanee Lertudomphonwanit (Division of Gastroenterology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Songpon Getsuwan (Division of Gastroenterology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Pornthep Tanpowpong (Division of Gastroenterology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University) ;
  • Pat Mahachoklertwattana (Division of Endocrinology, Department of Pediatrics, Faculty of Medicine Ramathibodi Hospital, Mahidol University)
  • Received : 2023.09.19
  • Accepted : 2024.03.27
  • Published : 2024.05.15
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Abstract

Purpose: To evaluate the prevalence of vertebral fracture (VF) in children with chronic liver disease (CLD) with and without liver transplantation (LT) and to determine the associated factors. Methods: A cross-sectional study was conducted. Patients aged 3-21 years with CLD both before and after LT were enrolled in the study. Lateral thoracolumbar spine radiographs were obtained and assessed for VF using Mäkitie's method. Clinical and biochemical data were collected. Results: We enrolled 147 patients (80 females; median age 8.8 years [interquartile range 6.0-11.8]; 110 [74.8%] in the LT group and 37 [25.2%] in the non-LT group). VF was identified in 21 patients (14.3%): 17/110 (15.5%) in the LT group and 4/37 (10.8%) in the non-LT group (p=0.54). Back pain was noted in only three patients with VF. In the univariate analysis, a height z-score below -2.0 (p=0.010), pre-LT hepatopulmonary syndrome (p=0.014), elevated serum direct and total bilirubin levels (p=0.037 and p=0.049, respectively), and vitamin D deficiency at 1-year post-LT (p=0.048) were associated with VF in the LT group. In multivariate analysis, height z-score below -2.0 was the only significant associated factor (odds ratio, 5.94; 95% confidence interval, 1.49-23.76; p=0.012) for VF. All VFs in the non-LT group were reported in males. Conclusion: In children with CLD, VF is common before and after LT. Most patients with VF are asymptomatic. Screening for VF should be considered in patients with a height z-score below -2.0 after LT.

Keywords

Acknowledgement

The authors acknowledge Mrs. Umaporn Udomsubpayakul, Department of Epidemiology and Statistics, for her assistance with the statistical analysis, Ms. Napapat Butrsriphum for her assistance with the study, and all pediatric liver transplant teams for patient care.

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