Femoral Versus Adductor Canal Continuous Peripheral Nerve Blocks for Knee Arthroplasty
Status:
Completed
Trial end date:
2014-09-01
Target enrollment:
Participant gender:
Summary
Patients typically experience moderate-to-severe pain following knee arthroplasty that is
usually treated with a combination of oral and intravenous analgesics and enhanced by
continuous peripheral nerve blocks. There are currently two locations to place a perineural
catheter to provide analgesia following knee arthroplasty: a femoral nerve catheter and an
adductor canal catheter. Both have been demonstrated to be effective following knee
arthroplasty. However, it remains unknown if one location is superior to the other; or, more
accurately, what the relative benefits are to each technique.
While femoral CPNB has many benefits, one of the challenges of using this technique is that
there is a decrease in quadriceps muscle strength which can be a limiting factor for
rehabilitation. In contrast, the adductor canal catheter affects only the vastus medialis.
This block may lessen block-induced quadriceps weakness following knee arthroplasty compared
with a femoral infusion.
The investigators hypothesize that compared with femoral perineural local anesthetic
infusion, an adductor canal infusion is associated with a shorter time until four discharge
criteria are met: (1) adequate analgesia; (2) independence from intravenous analgesics; (3)
ability to ambulate 30 m; and (4) ability to stand, walk 3 m, and return to a sitting
position without another's assistance.
Phase:
Phase 4
Details
Lead Sponsor:
University of California, San Diego
Collaborators:
Summit Medical Summit Medical Products, Inc. Teleflex UCSD Department of Anesthesiology University of California Academic Senate