Evaluation of Optimal Dose of Local Anesthetics for Patient Controlled Continuous Femoral Nerve Block

Evaluation of Optimal Dose of Local Anesthetics for Patient Controlled Continuous Femoral Nerve Block With Sciatic Nerve Block After Total Knee Arthroplasty

To evaluate an analgesic effect without basal administration of local anesthetics for patient-controlled femoral nerve block (with sciatic nerve block) after total knee arthroplasty.

Inclusion Criteria:

• patients older than 20 yrs old scheduled for total knee arthroplasty

Exclusion Criteria:

• none