MedTrace Logo

Proximal Spread in Adductor Canal Block(ACB)

NCT07595471 · Status: ACTIVE_NOT_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 68

Last updated 2026-05-19

No results posted yet for this study

Summary

This prospective, randomized clinical study is designed to evaluate the effects of two different injection levels of adductor canal block (ACB) on the proximal spread of local anesthetic and clinical outcomes in patients undergoing total knee arthroplasty. The study will be conducted at Ankara Etlik City Hospital and will include a total of 68 patients. All cases are limited to unilateral elective knee replacement surgeries performed under spinal anesthesia. In this study, the comparison will be based on the application of adductor canal block at two distinct injection levels. In both groups, blocks will be performed under ultrasound (USG) guidance using the same technical principles and standardized conditions; in the first group, the block will be administered at the level where the vasto-adductor membrane is first visualized, while in the second group, it will be performed at the level where the adductor longus ends. The type, concentration, and volume of local anesthetic used in both groups will be standardized as 20 mL of 0.25% bupivacaine. The groups will be compared in terms of the proximal spread of the local anesthetic based on the injection level, the area of spread at the apex of the iliopectineal fossa, the involvement of the femoral nerve, the incidence of postoperative falls, and analgesic consumption.

Conditions

  • Total Knee Anthroplasty
  • Postoperative Pain

Interventions

DRUG

Comparison of Proximal Adductor Canal Block

In this study, patients were evaluated using two distinct approaches based on the evolution of anatomical definitions in recent literature: the proximal application, traditionally referred to as the adductor canal block but now more accurately defined as the 'Femoral Triangle Block' in current publications,

DRUG

Comparison True Distal Adductor Canal Block.

In this study, patients were evaluated using two distinct approaches based on the evolution of anatomical definitions in recent literature: the proximal application, traditionally referred to as the adductor canal block but now more accurately defined as the true 'Distal Adductor Canal Block' performed in accordance with contemporary anatomical criteria."

Sponsors & Collaborators

  • Ankara Etlik City Hospital

    lead OTHER_GOV

Study Design

Allocation
RANDOMIZED
Purpose
OTHER
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-07
Primary Completion
2026-05-30
Completion
2026-06-01

Countries

  • Turkey (Türkiye)

Study Locations

More Related Trials

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07595471 on ClinicalTrials.gov