 METHODS: This research study will involve 180 adults who are at least 60 years old and have been diagnosed with lumbar spinal stenosis. The research volunteers will be divided into three groups, each group receiving one of the 3 types of treatments listed above under Objectives. The determination of which type of treatment each person receives will be determined by chance, using a computerized version of flipping a coin. This is a process known as randomization, which scientists think reduces the bias in research studies. A series of tests and questionnaires will be given to the patients before and after they get treatment and comparisons will be made to see how much improvement they made with each of the types of treatments. Finally, the researchers will compare the differences between the 3 treatment groups to see if certain types of treatment produced better results than others, and if there were any examination findings that could be used to predict which type of patient would do better with which type of treatment. 