Flowchart of patients’ recruitment. This study was part of a broader investigation that measured the impacts of pre-surgery wait in patients undergoing TKA and recruitment was therefore done at the enrollment on the pre-surgery wait list and patient were followed during pre-surgery wait. Specific to the objectives of the current paper, of the 153 participants who completed the interview conducted just before surgery, 138 answered the interview conducted 6 months after TKA. *Eligibility status unknown. Considered in initial participation proportion calculation.