I have been diagnosed with a synovial spinal cyst L4-5. The neuro surgeon says it needs to be taken out and he feels that I will have full recovery in about 4 weeks and return to ALL normal and previous activities (I'm very active). Does anyone have any experience? My left butt cheek throbs, pain and tingle all down leg to foot all the time, severe cramping in thigh muscle or calf muscle or foot. Is surgery the only option?? Help!!