By strengthening your leg muscles is that good for my knee arthritus?

Support helps. Not all knee arthritis is helpful. For some people, strengthening the hips muscles and re- in forcing the way the muscles behind and in front of the knee work together, can decrease overall pain. See a physiatrist to see if you are a candidate for a personalized physical therapy program. It may not decrease the arthritis, but it can improve function.
Not so. Strengthening leg muscl es does not improve arthritis. The strength of muscles has nothing to do with the degeneration of a joint. Arthitis is a wearing away of joint cartilage and build up of bony bunmp in and around a joint.