Salvatore Facciorusso, Stefania Spina, Giulio Gasperini, Alessandro Picelli, Mirko Filippetti, Franco Molteni, Andrea Santamato

Anatomical landmarks for ultrasound‐guided rectus femoris diagnostic nerve block in post‐stroke spasticity

  • Radiology, Nuclear Medicine and imaging
  • Radiological and Ultrasound Technology
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AbstractIntroduction/PurposeTo determine the location of the rectus femoris (RF) motor branch nerve, as well as its coordinates with reference to anatomical and ultrasound landmarks.MethodsThirty chronic stroke patients with stiff knee gait (SKG) and RF hyperactivity were included. The motor nerve branch to the RF muscle was identified medially to the vertical line from anterior superior iliac spine and the midpoint of the superior margin of the patella (line AP) and vertically to the horizontal line from the femoral pulse and its intersection point with the line AP (line F). The point of the motor branch (M) was located with ultrasound, and nerve depth and subcutaneous tissue thickness (ST) were calculated.ResultsThe coordinates of the motor branch to the RF were 2.82 (0.47) cm medially to the line AP and 4.61 (0.83) cm vertically to the line F. Nerve depth and subcutaneous tissue thickness were 2.71 (0.62) cm and 1.12 (0.75) cm, respectively.ConclusionThe use of specific coordinates may increase clinicians' confidence when performing RF motor nerve block. This could lead to better decision‐making when assessing SKG in chronic stroke patients.

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