Total Knee arthroplasty
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1. ASA I-III; 2. Aged 45 to 85 years; 3. Body mass index (BMI) < 30; 4. Patients who signed the informed consent for anesthesia.
Exclusion criteria
Exclusion criteria: 1. With previous blood system diseases, neurological and mental illness; 2. Patients allergic to local anesthetic (ropivacaine); 3. With infection of injection site; 4. Patients who continue to take painkillers in the near future.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| NRS score; | — |
Secondary
| Measure | Time frame |
|---|---|
| Local anesthetic dosage;Muscle strength; | — |
Countries
China
Contacts
Heze Municipal Hospital