What do you mean, it doesn't seem to be "enough"? You might try stationary biking, and some modified strength training, there are some articles on ST with arthritis in the fitness section.
Weight loss is primarily achieved through diet, and if you aren't seeing the results you want, you'll want to buckle down on nutrition, track your food and try to improve the quality of your intake.
“Sometimes the moments that challenge us the most, define us.” - Deena Kastor
Agatsu Kettlebell Instructor
Can-Fit-Pro Personal Trainer Specialist
8x marathon finisher/16x half marathon finisher
|48 Days until: Marathon #9