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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
16
St. Luke's Roosevelt Hospital
New York, New York, United States
Percent of maximum voluntary isometric contraction (MVIC) of knee extension preserved at 30 mins after either an ACB or FNB
Time frame: At 30 minutes
Percent of maximum voluntary isometric contraction (MVIC) of knee extension preserved at 60 mins after either an ACB or FNB
Time frame: At 60 minutes
Percent of maximum voluntary isometric contraction (MVIC) of hip adduction preserved at 30 mins after either an ACB or FNB
Time frame: At 30 minutes
Percent of maximum voluntary isometric contraction (MVIC) of hip adduction preserved at 60 mins after either an ACB or FNB
Time frame: At 60 minutes
Assessment of fall risk with the Berg Balance Scale (BBS) at 30 minutes after the first nerve block.
Time frame: At 30 minutes
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