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European Radiology

, Volume 25, Issue 3, pp 883–893 | Cite as

An update on risk factors for cartilage loss in knee osteoarthritis assessed using MRI-based semiquantitative grading methods

  • Hamza Alizai
  • Frank W. Roemer
  • Daichi Hayashi
  • Michel D. Crema
  • David T. Felson
  • Ali GuermaziEmail author
Musculoskeletal

Abstract

Arthroscopy-based semiquantitative scoring systems such as Outerbridge and Noyes’ scores were the first to be developed for the purpose of grading cartilage defects. As magnetic resonance imaging (MRI) became available faor evaluation of the osteoarthritic knee joint, these systems were adapted for use with MRI. Later on, grading methods such as the Whole Organ Magnetic Resonance Score, the Boston-Leeds Osteoarthritis Knee Score and the MRI Osteoarthritis Knee Score were designed specifically for performing whole-organ assessment of the knee joint structures, including cartilage. Cartilage grades on MRI obtained with these scoring systems represent optimal outcome measures for longitudinal studies, and are designed to enhance understanding of the knee osteoarthritis disease process. The purpose of this narrative review is to describe cartilage assessment in knee osteoarthritis using currently available MRI-based semiquantitative whole-organ scoring systems, and to provide an update on the risk factors for cartilage loss in knee osteoarthritis as assessed with these scoring systems.

Key Points

Radiography is neither specific nor sensitive to progression of knee osteoarthritis

Semiquantitative MRI-based outcome measures are useful to identify knee osteoarthritis risk factors

Several MRI-based semiquantitative scoring systems for knee cartilage lesions are available

Keywords

Magnetic resonance imaging Knee osteoarthritis Semiquantitative scores Risk factors Cartilage 

Notes

Acknowledgements

The scientific guarantor of this publication is Dr. Ali Guermazi. The authors of this manuscript declare relationships with the following companies: Drs. Ali Guermazi, Frank Roemer and Michel Crema are shareholders of Boston Imaging Core Lab (BICL). Dr. Ali Guermazi is a consultant for TissueGene, MerckSerono, and Sanofi-Aventis. This study has received funding by National Institutes of Health grant NIH AR47785. No complex statistical methods were necessary for this paper. Institutional Review Board approval was not required as this is a narrative review. Written informed consent was not required for this narrative review. Methodology: Narrative Review.

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Copyright information

© European Society of Radiology 2014

Authors and Affiliations

  • Hamza Alizai
    • 1
    • 2
    • 3
  • Frank W. Roemer
    • 1
    • 2
    • 4
  • Daichi Hayashi
    • 1
    • 2
    • 5
  • Michel D. Crema
    • 1
    • 2
    • 6
  • David T. Felson
    • 7
  • Ali Guermazi
    • 1
    • 2
    • 8
    Email author
  1. 1.Quantitative Imaging Center, Department of RadiologyBoston University School of MedicineBostonUSA
  2. 2.Aspetar Orthopaedic and Sports Medicine HospitalDohaQatar
  3. 3.Department of RadiologyUniversity of Texas Health Science Center at San AntonioSan AntonioUSA
  4. 4.Department of RadiologyUniversity of Erlangen-NurembergErlangenGermany
  5. 5.Department of Radiology, Bridgeport HospitalYale University School of MedicineBridgeportUSA
  6. 6.Department of RadiologyHospital do Coração and TeleimagemSão PauloBrazil
  7. 7.Clinical Epidemiology Research and Training UnitBoston University School of MedicineBostonUSA
  8. 8.Boston Medical CenterBostonUSA

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