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Volume 10 Supplement 1

IRSSD 2014 Meeting Abstracts

  • Poster presentation
  • Open Access

Bone metabolism and bone mineral density in adolescent idiopathic scoliosis

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  • 2,
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Scoliosis201510 (Suppl 1) :P7

  • Published:


  • Bone Mineral Density
  • Lumbar Spine
  • Bone Metabolism
  • Adolescent Idiopathic Scoliosis
  • Idiopathic Scoliosis


To characterize bone metabolism in AIS patients using bone metabolism markers.

Summary of background data

Although osteopenia is often associated with AIS, bone metabolism in this condition has not been assessed.


Bone mineral density (BMD) of the lumbar spine and bilateral proximal femurs (dual energy x-ray absorptiometry) and bone metabolism markers {bone formation marker: serum bone alkaline phosphatase (BAP); bone resorption marker: serum tartrate-resistant acid phosphatase serum band 5 (TRAP5b)} were measured in 55 consecutive AIS subjects aged 10 to 18 years-old (mean: 15.6+/-1.7). BMD, body mass index (BMI), and age of menarche were compared between subjects with normal and high values of TRAP5b.


Nineteen subjects (34%) had osteopenia and 17 subjects (31%) had osteoporosis. In 51 AIS subjects (93%), values for BAP were within normal range, while 33 subjects (60%) had high values for TRAP5b. Subjects with high values for TRAP5b had BMDs of the lumbar spine significantly lower than BMDs of patients with normal values of TRAP5b.


The primary cause of low BMD in AIS was increased bone resorption.

Authors’ Affiliations

Yokohama City University Medical Center, Japan
Yokohama Brain and Stroke Center, Japan
Yokohama City University, Japan


© Ishida et al; licensee BioMed Central Ltd. 2015

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver ( applies to the data made available in this article, unless otherwise stated.