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Randomized Controlled Trial
. 2024 Aug 28:95:485-491.
doi: 10.2340/17453674.2024.41346.

The effect of pain neuroscience education on chronic postsurgical pain after total knee arthroplasty: a randomized controlled trial

Dominique C Baas  1 , Johanna C Van Aalderen-Wichers  2 , Tjeerd H Van der Goot  3 , Ronald J Verhagen  3
Affiliations
Randomized Controlled Trial

The effect of pain neuroscience education on chronic postsurgical pain after total knee arthroplasty: a randomized controlled trial

Dominique C Baas et al. Acta Orthop. .

Abstract

Background and purpose: Chronic postsurgical pain after total knee arthroplasty (TKA) is frequent and may be reduced by pain neuroscience education (PNE), teaching people about pain from a neurobiological perspective. This study investigated primarily the effectiveness of 2 individual sessions of PNE versus usual care on pain levels 3 months postoperatively in patients undergoing TKA. Secondary outcomes were physical functioning, stiffness, health-related quality of life, pain catastrophizing, attention to pain, and levels of anxiety and depression.

Methods: A prospective single-center, parallel-group randomized controlled trial was undertaken including patients aged 18 years or older scheduled for primary TKA. 68 patients were randomly assigned to PNE or usual care. The primary outcome was the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain score 3 months postoperatively. Outcomes were measured preoperatively, at 2 weeks (acute phase), and at 3 and 12 months postoperatively.

Results: We found no statistically significant difference (0.4 points; 95% confidence interval [CI] -1.7 to 2.4) in WOMAC pain scores 3 months after TKA between the PNE and control group. We found a statistically significant difference between the 2 groups for attention to pain at 3 months in favor of PNE (P = 0.02).

Conclusion: This RCT showed that PNE was not superior to usual care in terms of reducing pain at 3 months after TKA. Attention to pain, as a secondary outcome, was significantly lower in the PNE group compared with usual care. Other secondary outcome measures showed no significant differences.

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Figures

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CONSORT flowchart of the trial and required assessments. ICF = informed consent form; PNE = Pain Neuroscience Education.
See this image and copyright information in PMC

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