I have just been diagnosed with degenerative hip problems, lordosis (excessive curvature of the lumbar spine), scoliosis of the lumbar spine, spina bifida occulta (hidden) and I have a 25-50% slip of my 5th lumbar vertebrae. All this is resulting in spinal fusion surgery in the new year which is major surgery with a long recovery period. At 17 stone,i need to get my head out of my backside, and desperately try to lose weight before the surgery. Exercise is very difficult now due to severe back, hip and leg pain, so I am sticking with swimming, a little walking. - back pain permitting, and Pilates. I might try getting on my bike again also. Does anyone else have any experience of this, or tips I could try?