I have an S-curve scoliosis, mainly in the thoracic region. I also was just diagnosed with Sheuermann's Disease between L-4 and L-2. I have a lot of pain in my whole back and cannot run, nor sit down for longer than about 30 minutes. The greatest pain is in my left leg, very much like sciatica. To fix both of these competing problems, my doctor has suggested spinal fusion from L-4 to about T-1 or a little higher. I am 20 years old and very active. I am wondering if any of you have had such a large portion of you back fused, and how it has helped/hindered you (pain, mobility, flexibility, etc.).

Thank you for your help!