Abstract
Objective To compare patients undergoing total knee arthroplasty (TKA) under spinal anesthesia
and single femoral nerve block (FNB) with subjects undergoing TKA under spinal anesthesia
and periarticular infiltration (PAI).
Materials and Methods A total of 100 patients undergoing primary TKA were randomized into two groups. Group
1 included patients undergoing surgery under FNB associated with spinal anesthesia,
while group 2 included patients undergoing TKA under IPA and spinal anesthesia. The
assessment of these subjects in the early postoperative period included pain, active
flexion, active extension, elevation of the extended limb, and morphine use.
Results There was no significant difference in the types of analgesia concerning pain, the
elevation of the extended limb, and morphine use. Active flexion and extension were
better in the PAI group (p = 0.04 and p = 0.02 respectively).
Conclusion We conclude that the techniques are similar regarding pain control, limb elevation,
and morphine use. The use of IPA provided better active flexion and extension during
the hospital stay compared to single FNB in patients undergoing TKA.
Keywords
analgesia - anesthetics, local - arthroplasty, replacement, knee - nerve block - inflitration
- femoral nerve
