Foot and ankle fractures
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. Foot and ankle surgery is proposed; 2. Sciatic nerve block is planned; 3. Age 18-80 years old; 4. BMI of 18~35 kg/ m^2; 5. Gender is not limited; 6. Patients who agreed to participate in this study and signed informed consent.
Exclusion criteria
Exclusion criteria: 1. The patient is unable to cooperate with nerve block; Inability to lie on one's side 2. Contrainidators of nerve block (such as coagulation dysfunction: PLT1.5, puncture site infection, local anesthetic poisoning, lower extremity neuropathy changes, etc.); 3. Allergic to ultrasonic coupling agent; 4. Trauma in the image acquisition area 5. There were sensorimotor abnormalities in the affected limb before surgery; 6. Patients who are unable to obtain informed consent.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The area of the sciatic nerve (measured from the image); | — |
Secondary
| Measure | Time frame |
|---|---|
| Distance from ischial tuberosity to greater trochanter of femur (body surface measurement);Distance from ischial tuberosity to the medial side of the femur (body surface measurement);Leg circumference in the plane of the sciatic nerve under the gluteal region;Distance between the sciatic nerve and the greater trochanter of the femur (measured from the image);Measurement index of CT image analysis; | — |
Countries
China
Contacts
Shanghai Sixth People's Hospital