Figure 4. Elderly patients' ability to walk more than 10 blocks before and after knee replacement surgery, by age

Internet Citation: Figure 4. Elderly patients' ability to walk more than 10 blocks before and after knee replacement surgery, by age. December 2014. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/research/findings/factsheets/aging/osteoria/osteoriaf4.html