Adductor Canal Block (ACB) Versus ACB /Saphenous Block in Patients Undergoing Anterior Cruciate Ligament Repair

Postoperative Pain Clinical Trial

Official title:

Presurgical Adductor Canal Block (ACB) Versus ACB and Distal (Intermuscular) Saphenous Nerve Block in Patients Undergoing Anterior Cruciate Ligament Repair Under General Anaesthesia: Randomised Controlled Trial.

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT04443634
• Other study ID #: N-27-2017
• Status: Recruiting
• Phase: N/A
• Start date: June 25, 2020
• Est. completion date: October 1, 2020

Study information

• Verified date: June 2020
• Source: Cairo University
• Contact: Bassant abdelhamid, M.D.
• Phone: 01224254012
• Email: bassantmohamed197[@]yahoo.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

Knee surgeries are associated with severe postoperative pain. Blocking the femoral nerve (or saphenous nerve) in the adductor canal is increasingly used for knee analgesia. It carries potential benefits that encourage anesthesiologists to do it. It has a motor sparing property. Injection of local anesthetics in this lengthy canal that contains a variable amount of connective or fibrous tissue might lead to a patchy distribution of local anesthetics. Thus, the possibility of incomplete block of the saphenous nerve (most important nerve in knee innervations) cannot be excluded.

Description:

Aim of the study is to compare the efficacy of the adductor canal block to the combined adductor canal block and saphenous nerve block at the distal third of thigh in the intermuscular plane between Vastus Medialis and Sartorius muscles in pain relief following knee arthroscopic anterior cruciate ligament repair.

After written informed consent, patients will be randomized in three groups:

Group (Adductor 20): Ultrasound guided adductor canal block will be performed with injection of 20 ml bupivcaine 0.5%.

Group (Adductor 30) Ultrasound guided adductor canal block will be performed with injection of 30 ml bupivacaine 0.5%. Group (Adductor/saphenous ): Ultrasound guided adductor canal block will be performed by injection of 20 ml bupivacaine 0.5%, combined with ultrasound guided saphenous

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 88
• Est. completion date: October 1, 2020
• Est. primary completion date: September 25, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 65 Years

Eligibility

Inclusion Criteria:

• Scheduled for knee orthopedic ( ACL repair)

• Physical status ASA I, II.

• Body mass index (BMI): > 20 kg/m2 and < 35 kg/m2.

Exclusion Criteria:

• • Patients with known sensitivity or contraindication to drug used in the study (local anesthetics, opioids).

• History of psychological disorders and/or chronic pain.

• Contraindication to regional anesthesia e.g. local sepsis, pre- existing peripheral neuropathies and coagulopathy.

• Infection of the skin at the site of needle puncture area.

• Patient refusal.

• Severe respiratory or cardiac disorders.

• Advanced liver or kidney disease.

• Pregnancy.

• Patient with surgery duration more than two hours.

Related Conditions & MeSH terms

• Pain, Postoperative
• Postoperative Pain

Intervention

Procedure:
• Ultrasound Guided Adductor Canal Block
It will be performed at the midthigh level, approximately halfway between the superior anterior iliac spine and the patella, a high-frequency linear ultrasound (US) transducer 5-12 MHz probe. Underneath the sartorius muscle the femoral artery was identified, with the vein just inferior and the saphenous nerve just lateral to the artery. From the lateral side of the transducer a 10-cm, 18-gauge Tuohy needle (Braun Medical, Melsungen, Germany) was inserted in plane, through the Sartorius muscle. With the tip of the Tuohy needle placed just underneath the vasto-adductor membrane and lateral to the artery and the saphenous nerve, 20 ml local anesthetic mixture will be injected to expand the adductor canal. the volume of local anesthetic will be selected according to the studied group
• Ultrasound Guided Saphenous Nerve Block
It will be performed at the intermuscular plane between the sartorius and the vasus medialis muscles at the lower third of the thigh. The US probe will be positioned on the front of the lower part of the thigh immediately above the patella to see both the patella (hyperechoic curved line) and vastus medialis infront of it (closer to skin). The probe is then moved medially over the vastus medialis till we see the end of the muscle and we see an intermuscular plane between it and Sartorius muscle. A 20 guage spinal needle will be then passed in an in plane direction within the substance of vastus medialis muscle and then pass within the vastus medialis until it faces the intermuscular plane between VM muscle and Sartorius. Once the needle tip is located in close proximity to the target structures, gentle aspiration will be performed followed by 20 ml local anesthetic will be injected.
• General anesthesia
General anesthesia was induced by propofol 1-2 mg/kg fentanyle 100micg and laryngeal mask was inserted. Maintanace of anesthesia was performed by sevoflurane 2-3%. Then the surgical procedure started. All patients had arthroscopic knee surgery( ACL repair) surgery under tourniquet control. Immediately after end the surgical procedure, either ACB or combined ACB and saphenous nerve block distal to adductor canal were performed according to randomization.

Drug:
• Bupivacaine 20 ml
20ml bupivacaine 0.5%
• Bupivacaine 30ml
30ml bupivacaine 0.5%
• Bupivacaine 10ml
10ml bupivacaine 0.5%

Locations

Country	Name	City	State
Egypt	Anesthesia Department	Cairo

Sponsors (1)

Lead Sponsor	Collaborator
Cairo University

Country where clinical trial is conducted

Egypt, 

References & Publications (4)

Ilfeld BM, Duke KB, Donohue MC. The association between lower extremity continuous peripheral nerve blocks and patient falls after knee and hip arthroplasty. Anesth Analg. 2010 Dec;111(6):1552-4. doi: 10.1213/ANE.0b013e3181fb9507. Epub 2010 Oct 1. — View Citation

Ilfeld BM, Moeller LK, Mariano ER, Loland VJ, Stevens-Lapsley JE, Fleisher AS, Girard PJ, Donohue MC, Ferguson EJ, Ball ST. Continuous peripheral nerve blocks: is local anesthetic dose the only factor, or do concentration and volume influence infusion effects as well? Anesthesiology. 2010 Feb;112(2):347-54. doi: 10.1097/ALN.0b013e3181ca4e5d. — View Citation

Jæger P, Koscielniak-Nielsen ZJ, Schrøder HM, Mathiesen O, Henningsen MH, Lund J, Jenstrup MT, Dahl JB. Adductor canal block for postoperative pain treatment after revision knee arthroplasty: a blinded, randomized, placebo-controlled study. PLoS One. 2014 Nov 11;9(11):e111951. doi: 10.1371/journal.pone.0111951. eCollection 2014. — View Citation

Manickam B, Perlas A, Duggan E, Brull R, Chan VW, Ramlogan R. Feasibility and efficacy of ultrasound-guided block of the saphenous nerve in the adductor canal. Reg Anesth Pain Med. 2009 Nov-Dec;34(6):578-80. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The total dose of morphine consumption in the first 24 hours postoperatively.	The total amount of morphine consumption in the first 24 hours postoperatively.	24 hours postoperative
Secondary	Total dose of intraoperative fentanyle adminstration		2 hours intraoperatively
Secondary	Numeric Pain Rating Scale	Numeric Pain Rating Scale, both at rest and during movement: 30 minutes,2, 4,6, 8, 12, 16, 20 and 24 hours postoperatively. It is labeled from zero to ten, with zero being an example of someone with no pain and ten being the worst pain possible.	24 hours postoperative
Secondary	Failure rate of the block	• Failure rate of the block will be calculated, where the block will be considered a failed block if the patient requires more than two doses of rescue analgesia in the first hour postoperatively.	24 hours
Secondary	Block related complications	o The incidence of vascular puncture, and presence or absence of saphenous nerve neuritis during the first month after surgery were also recorded	1 mounth