Proximal Versus Distal Adductor Canal Blocks for Total Knee Arthroplasty

Not Applicable

Completed

• Conditions: Post-Operative Pain
• Interventions: Procedure: Proximal Adductor Canal Block; Procedure: Distal Adductor Canal Block

• Registration Number: NCT02701114
• Lead Sponsor: Benaroya Research Institute

Brief Summary

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.

Detailed Description

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.

Study Timeline

• Study Start: 2016-02
• Study First Submitted: 2016-02-29
• Study First Submitted QC: 2016-03-02
• Study First Posted: 2016-03-08
• Primary Completion: 2016-11
• Study Completion: 2016-11
• Status Verified: 2017-07
• Last Update Submitted: 2017-07-11
• Last Update Posted: 2017-07-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 76

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

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Proximal	Proximal Adductor Canal Block	Proximal Adductor Canal Block
Distal	Distal Adductor Canal Block	Distal Adductor Canal Block

Primary Outcome Measures

Name	Time	Method
Opioid Consumption (IV Morphine Equivalents)	24 Hours	Total opioid consumption

Secondary Outcome Measures

Name	Time	Method
Opioid Consumption (IV Morphine Equivalents)	48 Hours	Total opioid consumption
Quadriceps Strength (% of Baseline)	48 Hours	Maximum Isometric Voluntary Contraction
Distance Ambulated (Feet)	48 Hours	Total distance ambulated during physical therapy
Pain (Numeric Rating)	48 Hours	NRS Pain Scale

Trial Locations

Locations (1)

Virginia Mason Medical Center; 🇺🇸 Seattle, Washington, United States