Persistent osteopenia in adolescent idiopathic scoliosis-longitudinal monitoring of bone mineral density until skeletal maturity

J. C.Y. Cheng, V. W.Y. Hung, W. T.K. Lee, H. Y. Yeung, T. P. Lam, B. K.W. Ng, Xia Guo, L. Qin

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

31 Citations (Scopus)


The aim of this study was to monitor BMD changes occurring during periods of rapid growth and to investigate whether osteopenia was a persistent phenomenon in skeletally matured AIS girls. 196 AIS Chinese girls and 122 healthy controls, aged 11-16, were follow-up for 3.5 years. Bilateral femoral neck bone mineral density (BMD) and volumetric BMD (vBMD) of the distal tibia were obtained by dual energy X-ray absorptiometry (DXA) and peripheral quantitative computed tomography (pQCT). Osteopenia was defined if the age-adjusted BMD was below or equal to -1 standard deviation (SD). The average age at the final follow-up was 16.8 years old. The median initial Cobb angle for this group of patients was 26°. The prevalence of osteopenia at the baseline measurement was 35.9%. Longitudinal BMD results demonstrated that 86.0% of osteopenic AIS girls had persistently low BMD at the time of skeletal maturity (age of 16). vBMD of distal tibia of AIS was significantly lower than that of the controls throughout the age of 13 to 17 during the period of rapid growth. In addition, there were also significant differences in vBMD among AIS (moderate and severe group) and the controls by one-way ANOVA (p<0.05). The present study for the first time revealed that over 86% of osteopenic AIS patients had persistently low BMD, at both distal tibia and femoral neck regions, at the time of skeletal maturity. Early detection and treatment of AIS-related osteopenia might help in maximizing peak bone mass during peripubertal growth that thereby minimizing risks of developing osteoporotic fractures later in life.
Original languageEnglish
Title of host publicationResearch into Spinal Deformities 5
Number of pages5
Publication statusPublished - 1 Dec 2006
Event6th Biennial Meeting of the International Research Society of Spinal Deformities - Ghent, Belgium
Duration: 21 Jun 200624 Jun 2006


Conference6th Biennial Meeting of the International Research Society of Spinal Deformities


  • Adolescent idiopathic scoliosis
  • Bone mineral density
  • Osteopenia

ASJC Scopus subject areas

  • Biomedical Engineering
  • Health Informatics
  • Health Information Management

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