INTRODUCTION
total knee replacement (TKR) is a treatment of
knee osteoarthritis to relieve pain and improve
mobility when conservative treatments have
failed.1
In Thailand, there is no report on the number of
patients undergoing TKR. However, according to Thailand
Arthritis Foundation, in 2006, the number of patients with
knee osteoarthritis was higher than 6,000,000 patients and
the number has tended to increase due to the increasing
elderly population.