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Analgesic efficacy of intracapsular and intra-articular local anaesthesia for knee arthroplasty

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  • L Ø Andersen
  • H Husted
  • B B Kristensen
  • K S Otte
  • L Gaarn-Larsen
  • Kehlet, Henrik
  • Niels Kristian Stahl Otte
The optimal site for wound delivery of local anaesthetic after total knee arthroplasty is undetermined. Sixty patients having total knee arthroplasty received intra-operative infiltration analgesia with ropivacaine 0.2% and were then were randomly assigned to receive either intracapsular or intra-articular catheters with 20 ml ropivacaine 0.5% given at 6 h and again at 24 h, postoperatively. Analgesic efficacy was assessed for 3 h after each injection, using a visual analogue score, where 0 = no pain and 100 = worst pain. There was no statistically significant difference between groups. Maximum pain relief (median (IQR [range])) at rest observed in the 3 h after the 6 and 24 h postoperative injections was 17 (7-31 [0-80]) and 10 (4-27 [0-50]) p = 0.27 for 6-9 h; and 17 (7-33 [0-100]) and 13 (3-25 [0-72]) p = 0.28 for 24-27 h, for intracapsular and intra-articular, respectively. Intracapsular local anaesthetic has similar analgesic efficacy to intra-articular after total knee arthroplasty.
OriginalsprogEngelsk
TidsskriftAnaesthesia
Vol/bind65
Udgave nummer9
Sider (fra-til)904-12
Antal sider9
ISSN0003-2409
DOI
StatusUdgivet - 1 sep. 2010

ID: 34050774