Jumping will jar her joints and cause pain and swelling - even if it's just jumping on or off the bed, the couch, etc. Jumping in and out of vehicles at any age should be strictly avoided - especially for large breed dogs. Going up and down stairs should also be kept to an absolute minimum.
A good pain management plan, a g/c supplement. a moderate but consistent exercise plan and keeping her weight at an optimum level will keep her comfortable and with you for many more years.