Skeletal Radiology

, Volume 42, Issue 2, pp 187–194

Femoral geometric parameters and BMD measurements by DXA in adult patients with different types of osteogenesis imperfecta

  • Roland Kocijan
  • Christian Muschitz
  • Nadja Fratzl-Zelman
  • Judith Haschka
  • Hans-Peter Dimai
  • Angela Trubrich
  • Christina Bittighofer
  • Heinrich Resch
Scientific Article

DOI: 10.1007/s00256-012-1512-4

Cite this article as:
Kocijan, R., Muschitz, C., Fratzl-Zelman, N. et al. Skeletal Radiol (2013) 42: 187. doi:10.1007/s00256-012-1512-4

Abstract

Objectives

Osteogenesis imperfecta (OI) is an inherited disorder characterized by increased bone fragility with recurrent fractures that leads to skeletal deformities in severe cases. Consequently, in most OI patients, the hip is the only reliable measuring site for estimating future fracture risk. The aim of the study was to assess the applicability of hip structure analysis (HSA) by DXA in adult patients with osteogenesis imperfecta.

Materials and methods

We evaluated bone mineral density (BMD) and hip structure analysis (HSA) by DXA, including cross-sectional area (CSA), cross-sectional moment of inertia (CSMI) and femoral strength index (FSI) in 30 adult patients with different types of OI and 30 age-matched healthy controls (CO). The OI total group (OI-tot) was divided into two subgroups: the mild OI I group (OI-I) and the more severe OI III and IV group (OI-III-IV).

Results

The mean neck BMD of OI-I and OI-III-IV were significantly lower compared to CO (−15.9 %, p < 0.005 and −37.5 %, p < 0.001 respectively). Similar results were observed at trochanter and total hip. CSA and the CSMI value were significantly lower for OI-I (−23.2 %, p < 0.001) and OI-III-IV (−45.9 %, p < 0.001) in comparison to CO. In addition, significant differences were found between the mild OI-I and the severe OI-III-IV group (−29.6 %, p < 0.05). FSI was significantly decreased in the OI-III-IV (25.7 %, p < 0.05) in comparison to the CO. Furthermore, significant correlations between BMD and HSA and between HSA and height and weight were found in osteogenesis imperfecta and controls.

Conclusion

BMD measurement in osteogenesis imperfecta patients is very critical. The combination of BMD and geometric structural measurements at the hip in osteogenesis imperfecta patients may represent an additional helpful means in estimating bone strength and fracture risk.

Keywords

Osteogenesis imperfecta Adults BMD Hip structure analysis (HSA) 

Copyright information

© ISS 2012

Authors and Affiliations

  • Roland Kocijan
    • 1
  • Christian Muschitz
    • 1
  • Nadja Fratzl-Zelman
    • 2
  • Judith Haschka
    • 1
  • Hans-Peter Dimai
    • 3
  • Angela Trubrich
    • 1
  • Christina Bittighofer
    • 1
  • Heinrich Resch
    • 1
  1. 1.St. Vincent Hospital, Medical Department IIAcademic Teaching Hospital of the Medical University Vienna, The VINFORCE Study GroupViennaAustria
  2. 2.1st Med. Dept. Hanusch HospitalLudwig Boltzmann Institute of Osteology at Hanusch Hospital of WGKK and AUVA Trauma Centre MeidlingViennaAustria
  3. 3.Division of Endocrinology and Nuclear MedicineMedical University GrazGrazAustria

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