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Related Experiment Videos

Anatomic motor point localization for partial quadriceps block in spasticity.

T Albert1, A Yelnik, F Colle

  • 1Service de Rééducation et de Réadaptation Fonctionnelles, Hôpital Fernand Widal, Paris.

Archives of Physical Medicine and Rehabilitation
|March 21, 2000
PubMed
Summary

Researchers precisely located the vastus intermedius nerve

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Area of Science:

  • Anatomy
  • Neuroscience

Background:

  • The vastus intermedius muscle is part of the quadriceps femoris group.
  • Accurate anatomical knowledge is crucial for precise nerve interventions.

Purpose of the Study:

  • To identify the precise location of the vastus intermedius nerve's motor point (point M).
  • To establish coordinates for point M relative to surface landmarks for potential clinical applications.

Main Methods:

  • A descriptive anatomical study was conducted on 29 adult cadaver limbs.
  • Anatomic dissection identified point M, with coordinates determined relative to the femoral nerve's emergence point (F) and the patella (R).

Main Results:

  • Point M's absolute vertical coordinate was 11.7 ± 2 cm.

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  • The relative vertical coordinate was 0.29 ± 0.04 of thigh length.
  • The horizontal coordinate was 2 ± 0.5 cm lateral to the defined thigh midline.

    • Conclusions:

    • The motor point of the vastus intermedius nerve can be located using two defined coordinates.
    • Further research is recommended to explore the clinical utility of these coordinates for nerve blocks, particularly in managing quadriceps spasticity.