Adductor Canal Localization in Living and Cadaver
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- This is an observational study: the protocol does not assign a study treatment.
- Who it may be relevant to
- Registry conditions: Anatomy, Adductor Canal Block. Basic parameters: 18 years — 65 years · All.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Turkey (Türkiye)
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Official title
Determination of Adductor Canal Location by USG Measurements and Cadaver Correlation
Overview
The aim of this study is to define the starting and ending points of the adductor canal in adductor canal block (ACB) applications through distance measurements relative to the anterior superior iliac spine (ASIS) and the adductor tubercle. These measurements are performed using ultrasound (USG) and correlated with cadaveric data. Key research questions addressed include: * Can the start and end points of the adductor canal be formulated along a line drawn between the ASIS and the adductor tubercle? * Is there a definable relationship between the block application site and anatomical landmarks such as the vastoadductor membrane (VAM), the apex of the femoral triangle, and other adjacent structures that facilitates localization? By validating ultrasound measurements with cadaveric findings, the study aims to provide researchers with a more predictable and reliable method for determining the optimal site for adductor canal block administration.
Detailed description
The aim of this study is to define the starting and ending points of the adductor canal (AC) in the context of adductor canal block (ACB) applications, through distance measurements related to the anterior superior iliac spine (ASIS) and adductor tubercle. These measurements are performed in two different planes: the first plane is along an imaginary line drawn between the ASIS and the femoral adductor tubercle, while the second plane is formed by the line between the ASIS and the base of the patella.
In these planes, distances were measured between the following points:
The distance between the adductor tubercle and ASIS,
The distance between ASIS and the base of the patella,
The distance between ASIS and the apex of the patella,
The distance between the midpoint of the inguinal fold and the base of the patella.
In patients, ultrasound was used to identify and mark the following anatomical points:
The apex of the iliopectineal fossa,
The first visible point of the vastoadductor membrane (VAM),
The point where the sartorius muscle ends with the intersection of the adductor longus and begins its contact with the edge of the adductor magnus point
The point where the adductor hiatus is located.
Additionally, in patients where visible, the descending genicular artery was also marked.
The position of the femoral artery in relation to the VAM (medial, middle, or lateral) was noted, as well as the location where the femoral artery intersects the adductor magnus and sartorius, and the depth from the skin to the adductor hiatus. Circumferential measurements of the thigh were also taken at these points.
Some of the data obtained was compared with anatomical measurements obtained through cadaveric dissection.
Key Research Questions
Where are the starting and ending points of the adductor canal?
Can the adductor canal be defined along a line drawn between the ASIS and the adductor tubercle?
Is there a definable relationship between the block application site and anatomical landmarks such as the vastoadductor membrane (VAM), the apex of the femoral triangle, and other adjacent structures that facilitate localization?
By validating ultrasound measurements with cadaveric findings, the study aims to provide researchers with a more predictable and reliable method for determining the optimal site for adductor canal block applications
Primary outcome measures
- location of the adductor canal [Time frame: Perioperative/Periprocedural]
Secondary outcome measures (4)
- Determining the entry point for adductor canal block [Time frame: Perioperative/Periprocedural]
- Adductor Canal neighborhoods [Time frame: Perioperative/Periprocedural]
- cadaver dissection [Time frame: Perioperative/Periprocedural]
- adductor canal [Time frame: Perioperative/Periprocedural]
Eligibility criteria
Inclusion criteria
ASA 1-2-3 patients
BMI <35
Ages 18-65
Those willing to participate in the study
Exclusion criteria
Those unwilling to participate in the study
Pregnant women
BMI >35
ASA 4-5-6 patients
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Healthy volunteers: No
Study design
- Observational model
- Case-control
Study locations
Turkey (Türkiye) · 1 center
- Ankara Etlik City Hospital — Ankara
Identifiers
NCT: NCT07247591 · AEŞH-BADEK-2025-0249