Study: NCT02453321

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Continuous Femoral Nerve Block
Description: A 27g plastic catheter placed below the inguinal crease to perform a conduction blockade of the sensory components of the femoral nerve in order to decrease pain in the knee after total knee arthroplasty

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Continuous Femoral Nerve Block
Description: A 27g plastic catheter placed below the inguinal crease to perform a conduction blockade of the sensory components of the femoral nerve in order to decrease pain in the knee after total knee arthroplasty

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Nerve Block, Continuous Adductor Canal
Description: A 27g plastic catheter placed on the anterior medial thigh midway between the groin and knee to provide a local anesthetic conduction blockade of the sensory components of the femoral nerve in order to decrease pain in the knee after total knee arthroplasty

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Continuous Sciatic Nerve Block
Description: A transgluteal approach to the sciatic nerve is use to place a 27g catheter. It will only be dose postoperatively after verifying sciatic nerve function still intact. The infusion will be 0.003% bupivacaine at 2ml/hr. This is not the intervention of interest, but our institution's predominant practice is to include the sciatic nerve block as part of the analgesic regimen for total knee arthroplasty.

Intervention type: PROCEDURE
Group type: ACTIVE_COMPARATOR
Intervention: Continuous Sciatic Nerve Block
Description: A transgluteal approach to the sciatic nerve is use to place a 27g catheter. It will only be dose postoperatively after verifying sciatic nerve function still intact. The infusion will be 0.003% bupivacaine at 2ml/hr. This is not the intervention of interest, but our institution's predominant practice is to include the sciatic nerve block as part of the analgesic regimen for total knee arthroplasty.

Intervention type: PROCEDURE
Group type: EXPERIMENTAL
Intervention: Continuous Sciatic Nerve Block
Description: A transgluteal approach to the sciatic nerve is use to place a 27g catheter. It will only be dose postoperatively after verifying sciatic nerve function still intact. The infusion will be 0.003% bupivacaine at 2ml/hr. This is not the intervention of interest, but our institution's predominant practice is to include the sciatic nerve block as part of the analgesic regimen for total knee arthroplasty.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Bupivacaine
Description: The concentration of the continuous infusion of bupivacaine though the peripheral nerve catheters will be 0.0625% for the femoral and adductor canal blocks and the concentration for the sciatic continuous catheter will be 0.03%.

Intervention type: DRUG
Group type: ACTIVE_COMPARATOR
Intervention: Bupivacaine
Description: The concentration of the continuous infusion of bupivacaine though the peripheral nerve catheters will be 0.0625% for the femoral and adductor canal blocks and the concentration for the sciatic continuous catheter will be 0.03%.

Intervention type: DRUG
Group type: EXPERIMENTAL
Intervention: Bupivacaine
Description: The concentration of the continuous infusion of bupivacaine though the peripheral nerve catheters will be 0.0625% for the femoral and adductor canal blocks and the concentration for the sciatic continuous catheter will be 0.03%.