Proximal Versus Distal Adductor Canal Blocks for Total Knee Arthroplasty

A Comparison of Proximal Versus Distal Continuous Adductor Canal Blocks After Total Knee Arthroplasty

This study is designed to evaluate pain control of continuous adductor canal blocks placed proximally versus distally within the canal. The investigators hypothesize that there will be similar pain control between both groups.

This study is a non-inferiority trial designed to determine whether placement of a continuous block within the adductor canal has a substantial impact on pain following total knee arthroplasty. Our primary outcome to determine this difference will be opioid consumption within the first day following surgery. Secondary outcomes will include: pain scores, quadriceps strength, and distance ambulated during physical therapy.

Inclusion Criteria:

• Unilateral Total Knee Arthroplasty
• ASA physical status I-III
• >18 years old
• Non-pregnant
• Consent to participate in the study

Exclusion Criteria:

• Refusal to participate
• <18 years old
• Chronic opioid use
• Localized infection Pregnancy Pre-existing coagulopathy Allergy to ultrasound gel or local anesthetics Contraindication to or refusal of spinal anesthetic