Arthropathy of Knee Joint
Conditions
Brief summary
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.
Interventions
Administration of 0.2% ropivacaine for femoral nerve block with 3 ml/h of basal dose, 5ml bolus by the patient, 60 minutes of lock out time.
Administration of 0.2% ropivacaine for femoral nerve block without basal dose, with 8 ml bolus by the patient, 60 minutes of lockout time.
Sponsors
Study design
Eligibility
Inclusion criteria
* patients older than 20 yrs old scheduled for total knee arthroplasty
Exclusion criteria
* none
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| pain scores by use of numerous rating scale (NRS) | 4 days after the surgery |
Secondary
| Measure | Time frame |
|---|---|
| dose of local anesthetics | 4 days after the surgery |
Countries
Japan