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. 2019 Jun 29;20(1):307.
doi: 10.1186/s12891-019-2669-y.

Improvement in mental health following total hip arthroplasty: the role of pain and function

Uyen-Sa D T Nguyen  1   2 , Thomas Perneger  3 , Patricia D Franklin  4   5 , Christophe Barea  6 , Pierre Hoffmeyer  6 , Anne Lübbeke  6
Affiliations

Improvement in mental health following total hip arthroplasty: the role of pain and function

Uyen-Sa D T Nguyen et al. BMC Musculoskelet Disord. .

Abstract

Background: Mental health has been shown to improve after total hip arthroplasty (THA). Little is known about the role of pain and function in this context. We assessed whether change in mental health was associated with improvement in pain and function 1 year post-surgery.

Methods: This prospective study included patients enrolled in a THA registry from 2010 to 2014. We examined the mental component score (MCS) before and 1 year post-surgery, and 1-year change, in association with Western Ontario McMaster Universities (WOMAC) pain and function scores. All scores were normalized, ranging from 0 to 100 (larger score indicating better outcome). Analyses were adjusted for potential confounders.

Results: Our study included 610 participants, of which 53% were women. Descriptive statistics are as follows: the average (SD) for age (years) was 68.5 (11.8), and for BMI was 26.9 (4.9). In addition, the MCS average (SD) at baseline was 44.7 (11.2), and at 1-year after THA was 47.5 (10.5). The average change from baseline to 1-year post-THA in MCS was 2.8 (95% CI: 1.9, 3.6), for an effect size of 0.26. As for the WOMAC pain score, the average change from baseline to 1-year post-THA was 44.2 (95%CI: 42.4, 46.0), for an effect size of 2.5. The equivalent change in WOMAC function was 38.1 (95% CI: 36.2, 40.0), for an effect size of 2.0. Results from multivariable analysis controlling for covariates showed that an improvement of 10 points in the 1-year change in pain score resulted in a 0.78 point (95%: CI 0.40, 1.26) increase in the 1-year change in MCS, whereas a 10-point improvement in the 1-year change in function was associated with a 0.94 point (95% CI: 0.56, 1.32) increase.

Conclusions: Mental health significantly improved from baseline to 1-year post-THA. Greater improvement in pain and function was associated with greater improvement in mental health 1 year post-THA.

Keywords: Mental health; Pain; Physical function; SF-12; Total hip arthroplasty; WOMAC.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Kernel density plot of SF-12 mental component scores (MCS) before and 1 year after primary total hip arthroplasty
See this image and copyright information in PMC

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