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Innervation
  • Motor
    • gluteus maximus      
  • Sensory
    • none
Origin
  • Originates from the sacral plexus      
    • carries fibers from L5, S1, and S2
Course of Nerve
  • Arises from the ventral divisions of L5, S1 and S2
  • Leaves the pelvis through the greater sciatic foramen
  • Runs underneath the piriformis
  • Divides into muscular branches to supply the gluteus maximus 
Nerve Injury & Clinical Conditions
  • Injury to this nerve leads to a gluteus maximus lurch  
    • when gluteus maximus is weak/injured, trunk extends (lean back) on heel-strike on weakened side
    • compensates for weakness of hip extension
 

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