Total Knee Arthroplasty
Conditions
Brief summary
This study evaluates the effect of the single-injection adductor canal block in patients receiving total knee arthroplasty under spinal anesthesia.
Detailed description
This study aims to evaluate the effect of the single-injection adductor canal block in patients receiving total knee arthroplasty under spinal anesthesia. The effect of the single-injection adductor canal and continuous adductor canal block in patients receiving total knee arthroplasty under general anesthesia has been well established. However, due to the residual effect of spinal anesthesia, the effect of the single-injection adductor canal block needs to be determined. The investigators hypothesize that the single-injection adductor canal block will decrease the total sum of 2h, 6h, 12h, and 24h pain score.
Interventions
PROCEDUREadductor canal block
After the end of the surgery, at the arrival of PACU, the patient's leg is prepared and draped in a sterile manner. Assisted by the high-frequency linear ultrasound transducer, we target the mid-thigh level and the 22-gauge/8cm needle is introduced in plain through the sartorius muscle. the correct position for the tip of the needle in the adductor canal is checked and a bolus injection of 0.5% ropivacaine 15ml is given.
PROCEDUREcontrol group
After the end of the surgery, at the arrival of PACU, the patient's leg is prepared and draped in a sterile manner. Assisted by the high-frequency linear ultrasound transducer, we target the mid-thigh level and the 22-gauge/8cm needle is introduced in plain through the sartorius muscle. the correct position for the tip of the needle in the adductor canal is checked and a bolus injection of normal saline15ml is given.
Sponsors
Seoul National University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Caregiver, Investigator)
Eligibility
Sex/Gender
ALL
Age
19 Years to 80 Years
Healthy volunteers
Yes
Inclusion criteria
* adult patients receiving total-knee arthroplasty under spinal anesthesia * ASA class 1-3
Exclusion criteria
* infection at the needle injection site * hard for pain evaluation * CRPS patient with lower extremity symptom * chronic opioid user * those with side effect to local anesthetics * those getting revision total-knee arthroplasty or with the previous operation at the same knee area * those getting the surgery under general anesthesia due to the failed spinal anesthesia
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| the sum of pain score | 2 hours, 6 hours, 12 hours, and 24 hours after intervention | VAS pain score (0 to 10) is measured using numeric pain rating scale at 2 hours, 6 hours, 12 hours, and 24 hours 0: no pain, 10: worst pain |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Postoperative nausea and vomiting | 2 hours, 6 hours, 12 hours, and 24 hours after intervention | degree of postoperative nausea and vomiting (0 to 3) 0: no nausea, no vomiting, 1: nausea present, but no vomiting, 2: nausea present, vomiting once, 3: vomiting repeatedly within 30 minutes. |
| Postoperative opioid consumption | 2 hours, 6 hours, 12 hours, and 24 hours intervention | amount of postoperative opioid consumption based on oral morphine equivalent daily dose |
Countries
South Korea
Outcome results
None listed