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Surgical and Radiologic Anatomy

, Volume 41, Issue 12, pp 1461–1471 | Cite as

Distribution of sensory nerves supplying the knee joint capsule and implications for genicular blockade and radiofrequency ablation: an anatomical study

  • Loïc FonkouéEmail author
  • Catherine Behets
  • Jean-Éric K. Kouassi
  • Maude Coyette
  • Christine Detrembleur
  • Emmanuel Thienpont
  • Olivier Cornu
Original Article

Abstract

Background

Despite their emerging therapeutic relevance, there are many discrepancies in anatomical description and terminology of the articular nerves supplying the human knee capsule. This cadaveric study aimed to determine their origin, trajectory, relationship and landmarks for therapeutic purpose.

Methods

We dissected 21 lower limbs from 21 cadavers, to investigate the anatomical distribution of all the articular nerves supplying the knee joint capsule. We identified constant genicular nerves according to their anatomical landmarks at their entering point to knee capsule and inserted Kirschner wires through the nerves in underlying bone at those target points. Measurements were taken, and both antero-posterior and lateral radiographs were obtained.

Results

The nerve to vastus medialis, saphenous nerve, anterior branch of obturator nerve and a branch from sciatic nerve provide substantial innervation to the medial knee capsule and retinaculum. The sciatic nerve and the nerve to the vastus lateralis supply sensory innervation to the supero-lateral aspect of the knee joint while the fibular nerve supplies its infero-lateral quadrant. Tibial nerve and posterior branch of obturator nerve supply posterior aspect of knee capsule. According to our findings, five constant genicular nerves with accurate landmarks could be targeted for therapeutic purpose.

Conclusion

The pattern of distribution of sensitive nerves supplying the knee joint capsule allows accurate and safe targeting of five constant genicular nerves for therapeutic purpose. This study provides robust anatomical foundations for genicular nerve blockade and radiofrequency ablation.

Keywords

Genicular nerve Knee innervation Anatomical landmarks Genicular blockade Radiofrequency ablation 

Notes

Acknowledgements

The authors thank the donors of the cadavers used in this study and their families.

Author contributions

LF: protocol development, data collection, data analysis, manuscript writing. CB: protocol development, data analysis, manuscript revision. J-EKK: data collection, manuscript revision. MC: manuscript revision. CD: manuscript revision. ET: manuscript revision. OC: project development, data analysis, manuscript revision.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Human and animal rights

This article does not contain any study with human participants performed by any of the authors, but it involved human cadavers.

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Copyright information

© Springer-Verlag France SAS, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Neuro-Musculo-Skeletal Pole (NMSK), Experimental and Clinical Research Institute (IREC)Université Catholique de Louvain (UCLouvain)BrusselsBelgium
  2. 2.Pole of MorphologyUniversité Catholique de Louvain (UCLouvain)BrusselsBelgium
  3. 3.Department of Orthopedics and Trauma, Cliniques Universitaires St-LucUniversité Catholique de Louvain (UCLouvain)BrusselsBelgium

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