My name is John Andraka. I am a physical therapist, and I would like to demonstrate a few non weight bearing or minimally weight bearing exercises which would be beneficial for a client that comes to our facility with a diagnosis of arthritis. We have our patient here who will be demonstrating a few of the exercises. The first one I would like to show is a straight leg raise. So straighten your leg out. I'm going to have you tighten up this muscle here. We're going to lift your leg up about even with the other side. We want nice slow controlled movement, up and down. This works you quadriceps muscles and your hip flexors as well. If we wanted to increase the intensity of this, we could obviously throw an ankle weight on his ankle to increase the muscle activation or the muscle force required to do the activity. O.k. let's have you bend this leg up. Next exercise is going to be a bridge. So we'll have your feet about shoulder width apart. Cross your arms across your chest and lift your hips up off the table. I'm going to have you hold that position for about five seconds. So this exercise is working the quadriceps, the hamstrings, and the hip extensors and also we're getting some back extensor activation as well. Benefits of strengthening around the joint is to increase shock absorption capability of those muscles and, thus, taking the stress off of the joints. And mainly we're targeting the hips and the knees with this exercise. The last exercise I'd demonstrate is a side leg raise. So if we can have you lay on your left side, Bob, we're going to roll your hips forward and let's bring your leg up and back and then back down. If you look at the direction of the muscle fibers, they run in this direction here so we almost want to come up and back with the exercise and then back down. So this is strengthening your hip abductors which are on the outside of your hip. And those are the three exercises that I feel are most beneficial for a patient with hip and knee arthritis. Thank you very much.