Daily Single Shot Adductor Canal Block Versus Continuous Adductor Canal Block After Total Knee Arthroplasty

Seoul National University

Status: Completed

Conditions: Postoperative Pain

Treatments: Procedure: Continuous adductor canal block; Procedure: Single shot adductor canal block

Study type: Interventional

Funder types: Other

Identifiers

NCT05727137

H-2209-136-1362

Details and patient eligibility

About

This study will compare the analgesic efficacy of daily single-shot adductor canal block(ABC) versus continuous ACB after total knee arthroplasty (TKA).

Full description

Patients 19-75 years old, of ASA classification I-III scheduled for unilateral TKA, will be enrolled and randomized into two groups, single-shot ACB group and continuous ACB group. In both groups, participants will be administered a single-shot ACB immediately after the end of the operation. The single-shot ACB group will receive two separate single-shot ACBs, on the first and second postoperative day. A nerve block catheter will be placed in patients in the continuous ACB group, which will be connected to a patient-controlled analgesia pump until the second postoperative day. The primary outcome of this study is the average NRS pain score at rest from the end of surgery to 2 days after surgery.

Enrollment: 80 patients

Sex: All

Ages: 19 to 75 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• ASA classification I, II, III
• Patients scheduled for unilateral knee arthroplasty

Exclusion criteria

• Anesthesia other than spinal anesthesia
• Chronic opioid use
• Uncontrolled diabetes of HbA1c>7.5
• Neuromuscular pathology of the ipsilateral leg
• Second-look knee arthroplasty
• Inability to communicate (e.g. dementia)
• Hypersensitivity to ropivacaine
• BMI > 40
• Pregnancy

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Single Blind

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80 participants in 2 patient groups

Single shot adductor canal block

Experimental group

Treatment:

Procedure: Single shot adductor canal block

Continuous adductor canal block

Active Comparator group

Treatment:

Procedure: Continuous adductor canal block