Disease on distal to the knee requiring orthopedic surgery
Conditions
Interventions
To perform a sciatic nerve block using the anterior approach
To perform a sciatic nerve block using the lateral approach
Sponsors
Department of Anesthesiology, Kansai Medical University Hospital
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: 1. Patients undergoing a unilateral lower extremity surgery on distal to the knee under general anesthesia combined with peripheral nerve blocks 2. American Society of Anesthesiologists PS 1-3 3. Written informed consent is provided
Exclusion criteria
Exclusion criteria: 1. Inability to communicate lucidly 2. Infection at the injection site 3. Prior surgery on the ipsilateral hip or femur 4. BMI > 35 kg/m2 5. BW < 40 kg 6. Allergy to local anesthetics 7. Pre-existing sensory disturbance of the ipsilateral lower extremity 8. Patients who are regarded ineligible by researchers with any other reasons
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Incidence of posterior femoral cutaneous nerve block at 30 min after execution of a sciatic nerve block | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Incidence of sensory block by a sciatic nerve block within 30 min after execution of a sciatic nerve block 2. Incidence of motor block by a sciatic nerve block within 30 min after execution of a sciatic nerve block 3. Time required to identify the sciatic nerve under ultrasound 4. Distance from the skin to the sciatic nerve 5. Needle distance under the skin when the tip of the needle reaching the sciatic nerve 6. Time required to perform a sciatic nerve block 7. Incidence of adverse effects caused by a sciatic nerve block | — |
Countries
Japan
Contacts
Public ContactTakayuki Yoshida
Kansai Medical University Hospital Department of Anesthesiology
Outcome results
None listed