hi Anon_40703 welcome to the board
From what you have stated it really doesn't seem that the pains you are describing are coming just from your scoliosis. It does sound like you have a pinched nerve causing the pains in your leg.
I would suggest that you go to your primary care physician and discuss this with him/her. See if you can have an X-ray done and a MRI - this will show exactly what is going on with your back.
then I would as for a referral to a Pain Management Specialist(they can do EPI injections; facet joint injections, etc. to help try to reduce the pains) and also try again Physical Therapy - normally PT and PM go hand-n-hand but I've had several PM doc's that didn't have me do this.
in the meantime you can try gentle massages on your hip (lay on your side - legs slightly bent) - also you can try heat and ice treatments.
There are a couple of medications that you can take - Neurontin or Lyrica - both are great for nerve root pains - it takes a couple of weeks to get used to the meds as they will make you sleepy - but once that is over and the correct dosage is given it should help control the pains.
The sooner you can get to your PCP doc and get the X-ray/MRI and the referrals the sooner you will start to feel better (hopefully - the injections help some while others-like me did not have any relief).
Also - as with pain pills, yes they are addictive, but if you take them as prescribed then there shouldn't be any concern for getting addictive to them. If NOT taken as directed then the addiction become more prominent. there is the physical addiction and mental addiction and they are different - it's all in how you use or abuse pain meds.
I hope this helps - please let us know how things are going and the results of your films - take care - Joy~~