ACB Versus IA Analgesia in Knee Arthroscopy

Status Completed

Clinical Trial Summary

Reconstruction of the anterior cruciate ligament (ACL) of the knee is a painful procedure, and effective postoperative analgesia is important for early return of patient activity.

Clinical Trial Description

Reconstruction of the anterior cruciate ligament (ACL) of the knee is a painful procedure, with postoperative analgesia providing patient comfort, early mobilization, and discharge within 24 hours. Various methods for postoperative analgesia management are available, such as systemic opioids, epidural local anesthetic, peripheral nerve block and local anesthetic infiltration analgesia. Use of systemic opioids can cause adverse effects that may affect functional rehabilitation, such as nausea, vomiting, pruritus, sedation and respiratory depression. Hypotension, urinary retention, and pruritus are more common in patients with epidural analgesia. In addition, use of long-acting intrathecal opioids causes adverse effects such as bilateral motor block, tremor and hypotension. Systemic and intrathecal methods for postoperative analgesia are gradually being abandoned because of these negative effects. The saphenous nerve is the largest contributor to sensory perception around the knee, while the adductor canal contains the nerve to the vastus medialis, the medial femoral cutaneous nerve, the medial retinacular nerve, articular branches from the posterior division of the obturator nerve and occasionally the anterior branch of the obturator nerve. Although adductor canal block (ACB) can contribute towards motor blockade of the periarticular musculature, its effect on functional weakness of the quadriceps has been reported to be minimal, compared with femoral nerve block (FNB). Intra-articular (IA) local anesthetic agents have been used either alone or in combination with other agent. However, it was observed that use of combination of drug is better than single drug for prevention of postoperative pain, providing synergistic effect and reducing side effects compared to high dose of single drug. Dexamethasone is a potent and highly selective glucocorticoid with minimal mineralocorticoid effect. It blocks the nociceptive impulse transmission along the myelinated C fibers. Dexamethasone prolongs the duration of regional blocks, when combined with local anesthetics. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04715152
Study type	Interventional
Source	Assiut University
Contact
Status	Completed
Phase	Phase 2
Start date	May 20, 2021
Completion date	July 31, 2023

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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.