Sciatic muscle pain and spasms can be a result of many different sciatica conditions, which could lead to sciatic muscle imbalance.  In your quest for sciatic nerve pain relief you will find many of these imbalances can be caused by a tightening of the mobility muscle.  These mobility muscles are either one large group of muscles that are active when activity is performed.  These Mobility muscles tend to become shortened with non-use or under-stretching.  Then they become weak because they are not being used.  Sciatic Muscle Pain and Spasms (341 words, 1 image, estimated 1:22 mins reading time)