Optimal Volume of Bupivacaine in Adductor Canal Nerve Block

Status Recruiting

Clinical Trial Summary

To establish adequate volume of levobupivacaine 0.25% in adductor canal nerve block in unilateral cruciate ligament of the knee reconstruction surgery.

Clinical Trial Description

The complex knee surgery has been associated with severe postoperative pain. Different analgesic techniques for postoperative management of this increasingly common surgery, with main purpose of adequately control pain, minimizing adverse effects and seeking early rehabilitation.

Currently, the most used technique is the continuous femoral nerve block, which is able to control postoperative pain well, but has the limitation that also produces motor blockade, decreasing quadriceps strength up to 80%, increasing the number of falls and delaying early mobilization after surgery. On the other hand, the adductor canal nerve block is an alternative as it is considered a purely sensitive block. The nerves that are in this channel are the saphenous adductor nerve, posterior branches of the obturator nerve, medial vast nerve, sometimes the medial cutaneous nerve and anterior branches of the obturator nerve and the vast medial nerve.

With regard to the adductor canal block, current literature supports analgesic effect comparable to femoral nerve block with less motor block than femoral nerve block. However, there is no clarity regarding the ideal concentration and volume of local anesthetics to use. Volumes ranging from 5 to 30 ml have been used in different studies. For example, using 20 mL of local anesthetic in femoral nerve block has produced scattering of anesthetic that has blocked motor branches.

The investigators objective is to determine which volume of levobupivacaine 0.25% is necessary to produce analgesia and sensitive blockade while minimizing motor blockade in adductor canal nerve block in patients undergoing cruciate ligament reconstruction surgery. ;

Study Design

Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment

Related Conditions & MeSH terms

Anesthesia, Local

Clinical Trial Details

NCT number	NCT02557386
Study type	Interventional
Source	Pontificia Universidad Catolica de Chile
Contact	Fernando R Altermatt, MD
Phone	56-2-23543270
Email	falterma@med.puc.cl
Status	Recruiting
Phase	Phase 4
Start date	January 2016
Completion date	March 2017

View Details

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Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.