<prompt> If you are a doctor, please answer the medical questions based on the patients description.In May of this year I fell and fractured my pelvis. I spent 4 days in hospital and a month in rehab. My fracture is probably pretty well healed, but now have terrible pain in buttocks and down legs. I also have scoliosis which has caused me pain for the past 12 years, but this is the first time I ve had this kind of pain. I do stretching exercises every morning, but don t know if I m doing the right ones for this condition. I m 88 years old, active, and until this happened I alternated riding my bike outside 5 miles a day, and walking 1 12 - 2 miles a day. Thanks for you help.  <response>: This is tricky without actually being there. Sciatica is classically in buttocks and down legs... the distribution of the sciatic nerve. Can also be just sore muscles from being immobilized such a while. Cannot say in your particular case, but there are a few general principles: dont overdo it--stop when there is pain. Building up supporting muscle structures protects joints and bones and disk stone takes 2 weeks of exercise at every other day to improve and rebuilding muscle mass takes months. I have shower bars, so I can very safely do stretches under the shower. This is good, but it is also very dangerous for falls unless the shower is specially built or if one is doing stretches in the shower in a shower seat sitting down. Otherwise, stretching is quite tricky without direct advise from a professional physical therapist. Stretching tends to trigger muscle aches and tears. 