2015 ISAKOS Biennial Congress ePoster #1445

Pain Catastrophic Thinking Affects the Patient Satisfaction and Outcome of Total Knee Arthroplasty

Hitomi Fujikawa, Otsu, Shiga JAPAN
Mitsuhiko Kubo, MD, PhD, Otsu, Shiga JAPAN
Kazuhiro Uenaka, MD, PhD, Otsu, Shiga JAPAN
Shinji Imai, MD, PhD, Otsu, Shiga JAPAN
Yoshitaka Matsusue, MD, Otsu, Shiga JAPAN

shiga medical university, outsu, shiga, JAPAN

FDA Status Not Applicable

Summary: Pain catastrophic thinking decreased patients satisfaction.So if the outcome of total knee arthroplasty was so good ,patient was not satisfied with the outcome.



Pain catastrophic thinking is defined as a negative orientation towards pain and one of the psychological factors. The objective of this study is to examine the effect of Pain Catastrophic thinking on the outcome of Total Knee Arthroplasty (TKA).

Material And Method

Ninety patients with knee Osteoarthritis (OA) underwent TKA at our hospital between in April 2012 to August 2013. Patients completed the questionnaires including Japanese version of pain catastrophizing scale (PCS), Knee society rating score (Knee/Functional), Japanese version of Knee injury and Osteoarthritis Outcome Score (J-KOOS), and patient satisfaction using Visual Analogue Scale (VAS).
Patients were classified in two groups by the PCS score (PCS average score:30 points). Group1 ;Over 30-point of PCS was strongly pain catastrophic thinking group, Group2; under 30-point was not. We used Mann-Whitney U-test to compare the outcome of two groups.


The average score of PCS was 29.6(1~52). Postoperative satisfaction was significantly lower in group 1 than in group 2 (i.e., VAS:80 vs 89). Preoperative Knee/Functional score, and J-KOOS of group 1 were significantly lower than those of group 2 (i.e., Knee score: 33.5 vs 38.4 and Functional score: 65.3 vs 68.5, and J-KOOS: 130 vs 128.1). With the exception of Knee score, the postoperative parameters were not significantly different between the two groups (i.e., Knee score: 83.7 vs 91.1, Functional score: 65.3 vs 68.5, and J-KOOS: 162.4 vs 168.8).


The results suggested that pain catastrophic thinking decreased patients satisfaction. Therefore patient may be not satisfied even if the outcome of TKA was good.