Skeletal Radiology

, Volume 42, Issue 6, pp 803–808

Meralgia paresthetica: 3-Tesla magnetic resonance neurography

Authors

    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • Filippo Del Grande
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • Theodoros Soldatos
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • Majid Chalian
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • Allan J. Belzberg
    • Department of NeurosurgeryJohns Hopkins University School of Medicine
  • Eric H. Williams
    • Department of Plastic SurgeryJohns Hopkins Hospital and Dellon Institute for Peripheral Nerve Surgery
  • Farahani S. Jalali
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • Gaurav K. Thawait
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • John Eng
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
  • John A. Carrino
    • Russell H. Morgan Department of Radiology and Radiological ScienceJohns Hopkins University School of Medicine
Scientific Article

DOI: 10.1007/s00256-012-1557-4

Cite this article as:
Chhabra, A., Del Grande, F., Soldatos, T. et al. Skeletal Radiol (2013) 42: 803. doi:10.1007/s00256-012-1557-4

Abstract

Objective

To assess the diagnostic accuracy and observer performance of 3-Tesla magnetic resonance neurography (MRN) in the evaluation of meralgia paresthetica (MP).

Materials and methods

Two independent readers were blinded to the clinical diagnosis and evaluated the MRN studies of the pelvis of 11 patients with MP and 28 control participants. In each study, the lateral femoral cutaneous nerves were assessed for signal alteration and/or neuroma formation, indicating lateral femoral cutaneous neuropathy, at various levels along their course. Intra- and inter-observer reliability was evaluated.

Results

Both readers exhibited substantial intraobserver agreement in detecting signal alterations and neuroma formation of the lateral femoral cutaneous nerve (LFCN). The readers demonstrated moderate interobserver agreement in detecting signal alteration of the LFCN and poor interobserver agreement in diagnosing neuroma formation. Sensitivity, specificity, positive predictive value, and negative predictive value of LFCN neuropathy diagnosis were ≥71 % and ≥94 % for both readers respectively. The diagnostic test accuracy was ≥90 % for both readers.

Conclusion

3-Tesla MRN provides reliable and accurate diagnostic evaluation of meralgia paresthetica.

Keywords

Meralgia parestheticaMagnetic resonance neurography3-Tesla

Copyright information

© ISS 2013