knee replacement

I just finished reading a study on the correlation between the use of beta blockers and the need for a total knee replacement in patients with osteoarthritis. I will share the results and their underlying hypothesis, but I want to discuss their map illustrating the “cause” of what they found.
We can reduce the cost of surgical care for some, but that might place new costs on others, as knee and hip replacements demonstrate.
Knee or hip replacement surgery can greatly improve quality of life for arthritis sufferers. But new research indicates that these procedures may also increase the risk of heart attacks early in the recovery period.
Since 2010 the University of Massachusetts Department of Orthopedics and Physical Rehabilitation has been maintaining a national database (FORCE-TJR) of total joint replacement surgical and patient-reported outcomes of the surgery. Recently, a disturbing trend has been observed in the data from this study.