Postoperative pain relief after total hip arthroplasty: A randomized, double-blind comparison between intrathecal morphine and local infiltration analgesia

  • J. K
  • B. G
  • A. L
 et al. 
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BackgroundPostoperative pain after total hip arthroplasty (THA) can delay mobilization. This was assessed after intrathecal morphine (ITM) compared with local infiltration analgesia (LIA) using a non-inferiority design.MethodsEighty patients were recruited in this randomized, double-blind study. ITM 0.1 mg (Group ITM) or periarticular local anaesthetic (ropivacaine 300 mg)+ketorolac 30 mg+ epinephrine 0.5 mg (total volume 151.5 ml) (Group LIA) were compared. After 24 h, 22 ml of saline (Group ITM) or ropivacaine (150 mg)+ketorolac (30 mg)+epinephrine (0.1 mg) (Group LIA) were injected via a catheter. After operation, rescue analgesic consumption, pain intensity, and home-readiness were measured.ResultsMorphine consumption was equivalent, median difference 0 mg (95% confidence interval -4 to 4.5) between the groups at 0-24 h. During 24-48 h, it was lower in Group LIA (3 mg, 0-60 mg, median, range) compared with Group ITM (10 mg, 0-81 mg) (P=0.01). Lower pain scores were recorded at rest at 8 h in Group ITM (P

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  • Kuchalik J.

  • Granath B.

  • Ljunggren A.

  • Magnuson A.

  • Lundin A.

  • Gupta A.

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