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The emerging role of MRI neurography in the diagnosis of chronic inguinal pain

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Abstract

Introduction

Chronic pain is a frequent and notable complication after inguinal hernia repair, it has been extensively studied, but its management and diagnosis are still difficult. The cause of chronic pain following inguinal hernia surgery is usually multifactorial. This case series highlights the utility of MRI neurography (MRN) in evaluating the damage to inguinal nerves after a hernia repair, with surgical confirmation of the preoperative imaging findings.

Materials and Methods

A retrospective review was performed on patients who underwent inguinal mesh removal and triple denervation of the groin. Inclusion criteria included MRI neurography. All patients underwent surgical exploration of the inguinal canal for partial or complete mesh removal and triple denervation of the groin by the same senior surgeon.

Results

A total of nine patients who underwent triple denervation were included in this case series. MRN was then performed on 100% of patients. The postoperative mean VAS score adjusted for all patients was 1.6 (SD p), resulting in a 7.5 score difference compared to the preoperative VAS score (p). Since chronic groin pain can be a severely debilitating condition, diagnosis, and treatment become imperative.

Conclusion

MRN can detect direct and indirect signs of neuropathy even in the absence of a detectable compressive cause aids in management and diagnosis by finding the precise site of injury, and grading nerve injury to aid pre-operative assessment for the nerve surgeon. Thus, it is a valuable diagnostic tool to help with the diagnosis of nerve injuries in the setting of post-inguinal hernia groin pain.

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Data Availability

Data is available upon request.

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Authors and Affiliations

  1. Division of Plastic Surgery, Department of Surgery, Houston Methodist Hospital, 6560 Fannin, Suite 2200, Scurlock Tower, Houston, TX, USA

    Alexa De la Fuente Hagopian, Sebastian Guadarrama-Sistos Vazquez, Souha Farhat & Anthony Echo

  2. Texas A&M Medicine, College Station, TX, USA

    Narainsai K. Reddy & Anthony Echo

  3. Department of Radiology, Houston Methodist Hospital, Houston, TX, USA

    Michael A. Trakhtenbroit

  4. Weill Cornell Medicine, New York, NY, USA

    Michael A. Trakhtenbroit & Anthony Echo

Authors
  1. Alexa De la Fuente Hagopian
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  3. Souha Farhat
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  4. Narainsai K. Reddy
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Contributions

A. De la Fuente Hagopian: data curation, formal analysis, visualization, methodology, writing—original draft, writing—review, and editing, study conception, and design. S. Guadarrama-Sistos Vazquez: data curation, investigation, visualization, writing—original draft, writing—review editing, study conception, and design. S. Farhat: data curation, writing—review, and editing. N. Reddy: data curation, writing–review, and editing. M.A. Trakhtenbroit: conceptualization, resources, data curation, supervision, project administration, writing—review, and editing. A. Echo: conceptualization, resources, data curation, supervision, project administration, writing—review, and critical revision of manuscript.

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Correspondence to Anthony Echo.

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De la Fuente Hagopian, A., Guadarrama-Sistos Vazquez, S., Farhat, S. et al. The emerging role of MRI neurography in the diagnosis of chronic inguinal pain. Langenbecks Arch Surg 408, 319 (2023). https://doi.org/10.1007/s00423-023-03050-9

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