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Irish Journal of Medical Science

, Volume 181, Issue 3, pp 341–343 | Cite as

Transient osteoporosis of the hip and spontaneous osteonecrosis of the knee: a common aetiology?

  • M. E. A. P. M. Adriaensen
  • K. J. Mulhall
  • R. A. P. Borghans
  • P. Magill
  • E. C. Kavanagh
Case Report

Abstract

Introduction

The aetiologies of transient osteoporosis of the hip (TOH) and spontaneous osteonecrosis of the knee (SONK) are still unknown. Both entities present with pain and extensive bone marrow oedema is seen on magnetic resonance imaging.

Methods and materials

We describe a patient who presented with TOH and later also developed SONK. Initial magnetic resonance imaging findings of both the hip and the knee showed extensive bone marrow oedema and a subchondral fracture line suggesting that subchondral fractures might be of importance to the aetiology of both conditions.

Conclusion

To our knowledge, this is the first case report that describes the occurrence of TOH and SONK in the same patient and introduces the possibility of a common aetiology.

Keywords

MRI Hip Knee Osteonecrosis Osteoporosis Aetiology 

Notes

Conflict of interest statement

None.

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Copyright information

© Royal Academy of Medicine in Ireland 2009

Authors and Affiliations

  • M. E. A. P. M. Adriaensen
    • 1
  • K. J. Mulhall
    • 2
  • R. A. P. Borghans
    • 1
  • P. Magill
    • 2
  • E. C. Kavanagh
    • 3
    • 4
  1. 1.Department of RadiologyAtrium Medical CenterHeerlenThe Netherlands
  2. 2.Department of Orthopaedic SurgerySports Surgery ClinicDublinIreland
  3. 3.Department of RadiologyMater Misericordiae HospitalDublinIreland
  4. 4.Department of RadiologySports Surgery ClinicDublinIreland

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