Relevance of regional and local infiltration analgesia in pain relief after total knee arthroplasty
2013
OBJECTIVE: The aim of the study was to assess the effect of different types of anesthesia on pain intensity in early postoperative period.
PATIENTS AND METHODS: A total of 87 patients (77 women, 10 men) scheduled for total knee arthroplasty (TKA) were assigned to receive either subarachnoid anesthesia alone or in combination with local soft tissue anesthesia, local soft tissue anesthesia and femoral nerve block and pre-emptive infiltration together with local soft tissue anesthesia. We assessed the pain intensity, opioid consumption, knee joint mobility, and complications of surgery.
RESULTS: Subjects with pre-emptive infiltration and local soft tissue anesthesia had lower pain intensity on the first postoperative day compared to those with soft tissue anesthesia and femoral nerve block (P=0.012, effect size 0.68). Subjects who received pre-emptive infiltration and local soft-tissue anesthesia had the greatest range of motion in the operated knee at discharge (mean 90 grades [SD 7], P=0.01 compared to those who received subarachnoid anesthesia alone, and P=0.001 compared to those with subarachnoid together with soft tissue anesthesia).
CONCLUSION: Despite the differences in postoperative pain and knee mobility the results obtained throughout the postoperative period do not enable us to favour neither local nor regional infiltration anaesthesia in TKA.
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