Ultrasound Guided Adductor Canal Block Versus Femoral Nerve Block for Quadriceps Strength and Fall-risk

Phase 4

Completed

• Conditions: Quadriceps Muscle Weakness; Adductor Muscle Weakness; Fall Risk
• Interventions: Procedure: Ultrasound Guided Adductor Canal Block; Procedure: Ultrasound Guided Femoral Nerve Block

• Registration Number: NCT01655277
• Lead Sponsor: St. Luke's-Roosevelt Hospital Center

Brief Summary

Our objective was to determine if an ultrasound guided ACB can preserve quadriceps strength, thus minimizing weakness of knee extension compared with ultrasound guided femoral nerve block. Our primary outcome was the percent of maximum voluntary isometric contraction (MVIC) of knee extension preserved at 30 mins after either an ACB or FNB. Secondary outcomes included MVIC of knee extension at 60 min, hip adduction at 30 and 60 mins, and assessment of fall risk with the Berg Balance Scale (BBS) at 30 minutes.

Detailed Description

Not available

Study Timeline

• Study Start: 2012-02
• Primary Completion: 2012-06
• Study Completion: 2012-06
• Status Verified: 2012-07
• Study First Submitted: 2012-07-30
• Study First Submitted QC: 2012-07-30
• Last Update Submitted: 2012-07-30
• Study First Posted: 2012-08-01
• Last Update Posted: 2012-08-01

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 16

Inclusion Criteria

• Adults (>18yrs)
• ASA 1-2

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Exclusion Criteria

• BMI >30
• Allergy to local anesthetics
• Pre-existing gait disturbance
• Pre-existing neuropathy

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Adductor Canal block first	Ultrasound Guided Adductor Canal Block	This arm received an ultrasound guided adductor canal block with 15mL of chloroprocaine 3% followed by motor, sensory and balance assessments. Then the patients received an ultrasound guided femoral nerve block with 15mL of chloroprocaine 3% followed by sensory and motor assessments.
Adductor Canal block first	Ultrasound Guided Femoral Nerve Block	This arm received an ultrasound guided adductor canal block with 15mL of chloroprocaine 3% followed by motor, sensory and balance assessments. Then the patients received an ultrasound guided femoral nerve block with 15mL of chloroprocaine 3% followed by sensory and motor assessments.
Femoral nerve block first	Ultrasound Guided Adductor Canal Block	This arm received an ultrasound guided femoral nerve block with 15mL of chloroprocaine 3% followed by motor, sensory and balance assessments. Then the patients received an ultrasound guided adductor canal block with 15mL of chloroprocaine 3% followed by sensory and motor assessments.
Femoral nerve block first	Ultrasound Guided Femoral Nerve Block	This arm received an ultrasound guided femoral nerve block with 15mL of chloroprocaine 3% followed by motor, sensory and balance assessments. Then the patients received an ultrasound guided adductor canal block with 15mL of chloroprocaine 3% followed by sensory and motor assessments.

Primary Outcome Measures

Name	Time	Method
Percent of maximum voluntary isometric contraction (MVIC) of knee extension preserved at 30 mins after either an ACB or FNB	At 30 minutes

Secondary Outcome Measures

Name	Time	Method
Percent of maximum voluntary isometric contraction (MVIC) of knee extension preserved at 60 mins after either an ACB or FNB	At 60 minutes
Percent of maximum voluntary isometric contraction (MVIC) of hip adduction preserved at 30 mins after either an ACB or FNB	At 30 minutes
Percent of maximum voluntary isometric contraction (MVIC) of hip adduction preserved at 60 mins after either an ACB or FNB	At 60 minutes
Assessment of fall risk with the Berg Balance Scale (BBS) at 30 minutes after the first nerve block.	At 30 minutes

Trial Locations

Locations (1)

St. Luke's Roosevelt Hospital; 🇺🇸 New York, New York, United States