Effect of patient characteristics on reported outcomes after total knee replacement

Abstract

The main predictor of outcome at 6 months post-operatively in all eleven domains was the pre-intervention score of each domain. Presence of social support, absence of low back pain and higher baseline SF-36 mental health score were related to the improvement in the health-related quality of life post-operatively.

Do Psychological Factors Predict Poor Outcome in Patients Undergoing TKA? A Systematic Review

“…Twelve articles showed a statistically significant relationship with higher rates of persistent pain in the group of patients with mental health factors. In the remaining article, Escobar et al [15] reported a similar trend, but the trend did not reach statistical significance (p = 0.09). Although pooling the results for meta-analysis was not possible, conclusions from the studies regarding the effect of mental health factors on pain after undergoing TKA were similar.…”

“…Of the 19 studies, there were 17 cohort studies [3, 5, 8, 9, 13, 14, 24, 26-28, 34, 37, 39, 44, 46, 47, 50] and two cross-sectional surveys [15,18], including five level 1 prognostic studies [3,8,13,34,39]. The studies were conducted in seven countries: 10 in the USA [3,5,8,9,13,14,24,34,39,46]; four in the UK [27,34,44,50]; four in Canada; [18,26,34,47]; and one each in Australia [34], Spain [15], Greece [37], and Korea [28].…”

“…The studies were conducted in seven countries: 10 in the USA [3,5,8,9,13,14,24,34,39,46]; four in the UK [27,34,44,50]; four in Canada; [18,26,34,47]; and one each in Australia [34], Spain [15], Greece [37], and Korea [28]. Most studies (17) were conducted in metropolitan populations; one study was a multinational cohort study conducted in 13 centers in four countries (UK, USA, Australia, and Canada) [34].…”

“…There was considerable heterogeneity in the self-reported psychological questionnaires used to measure [3,14,15,18,24,26,28,34,44]. Two other studies [8,9] used the State Trait Anxiety Index and the Beck Depression Index.…”

“…Preoperative psychological factors of patients such as anxiety, depression, catastrophizing state, poor self-efficacy, and poor coping skills may be preoperative predictors of unsatisfactory patient outcomes after joint replacement surgery [3,15,19,20,33,42]. The duration and magnitude of the effect these factors have on postoperative outcomes remains unclear.…”