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The influence of pre- and perioperative administration of gabapentin on pain 3-4 years after total knee arthroplasty

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BACKGROUND AND AIMS: Approximately 20% of patients having total knee arthroplasty (TKA) will experience chronic postoperative pain. Recently, preoperative pain facilitation has been associated with chronic pain after TKA, and gabapentin has been shown to decrease pain facilitation. The current study is a secondary follow-up of a primary RCT investigating the effect of gabapentin on acute postoperative pain after TKA and exploring the effect of pre- and perioperative administration of gabapentin on chronic postoperative pain and psychological state 3-4 years after TKA.

METHODS: Patients scheduled for TKA were randomized to either gabapentin 1,300 mg/day, gabapentin 900 mg/day, or placebo daily from 2-h before and 6 days after operation. Pre- and 3-4 years postoperatively pain scores related to pain while walking, at rest, when flexing the hip or the knee were collected. At the same time, the pain catastrophizing scale (PCS) and hospital anxiety and depression scale subscales for anxiety (HADS-A) and depression (HADS-D) were collected.

RESULTS: Lower postoperative pain while walking, flexing the hip, and at rest were found compared with preoperative scores (p<0.03), but these were not associated with gabapentin treatment (p>0.19). Significantly lower postoperative PCS and HADS-A scores were seen compared with preoperative scores (p<0.001), but these were not associated with gabapentin treatment (p>0.55).

CONCLUSIONS: The current study found that pre- and perioperative administrations of gabapentin do not influence the pain or psychological state 3-4 years after TKA.

IMPLICATIONS: The current study does not support that short-term pre- and perioperative use of gabapentin can reduce the development of chronic postoperative pain after TKA.

Original languageEnglish
JournalScandinavian Journal of Pain
Volume18
Issue number2
Pages (from-to)237-245
Number of pages9
ISSN1877-8860
DOIs
Publication statusPublished - 25 Apr 2018

ID: 53972879