====== Sciatic Nerve ======

  * SCIATIC NERVE 
    * ORIGIN
      * Union of roots in front of piriformis muscle
        * The lumbosacral trunk from the L4 and L5 roots 
          * descends between the sacral promontory and ala 
        * and the S1 to S3 roots emerge from the ventral sacral foramina
    * COURSE 
      * EXIT OF PELVIS 
        * passes beneath piriformis through greater sciatic foramen 
      * THIGH 
        * travels down the posterior thigh to popliteal fossa 
        * travels in posterior compartment of thigh 
          * superficial to adductor magnus muscle 
          * deep to long head of biceps femoris muscle
        * Just above popliteal fossa 
          * divides in to two terminal branches 
            * The tibial nerve, 
               * travels down the posterior compartment of the leg into the foot
            * The common fibular nerve (also called the common peroneal nerve), 
               * travels down the anterior and lateral compartments of the leg into the foot
      * POPLITEAL FOSSA  
    


{{:anatomy:sciatic-nerve-variations.png}}
{{:anatomy:sciatic_nerve-rt.png}}