Hi Steve, About 3 weeks ago, my father, who has Multiple Systems Atrophy, similar to but not Parkinson's, began to have pain in his buttocks while walking. This happened the day after he walked a lot further than he was accustomed to while visiting an independent living facility. We thought at first that it was just muscle soreness, but it has not abated at all in 3 weeks. Dad's spine is rather twisted and he has dealt with low back pain for several years. We will be visiting a GP on Tuesday and I have printed out your note for reference. Question: What sort of doctor and/or types of tests diagnosed your father's spinal stenosis? Sorry I have no information FOR you, but I do appreciate the timely information you provided. Jane K. Marietta, GA