Magnetic resonance imaging: The patient will undergo a pelvic MRI to assess anesthetic diffusion after PENG block
Study summary
This study uses MRI imaging to evaluate the spread of local anesthetic following the administration of a pericapsular nerve group (PENG) block. The goal is to determine whether a distinct fascial plane exists between neurovascular structures, potentially explaining the block's observed clinical effectiveness.
Eligibility
Sex
ALL
Min age
18 Years
Max age
—
Healthy volunteers
No
Inclusion Criteria:
* Patients scheduled for total hip replacement surgery
* Age ≥ 18 years
* ASA physical status classification I-III
* Signed informed consent obtained
* Orthopedic indication for preoperative MRI study
Exclusion Criteria:
* Allergy to local anesthetics
* Infection at the planned puncture site
* Refusal or inability to provide informed consent
* Age \< 18 years
* Claustrophobia
* Altered consciousness or severe dementia
* Presence of MRI-incompatible implanted devices (e.g., pacemakers implanted before 2000)
* Pregnancy or breastfeeding
Primary outcome measure(s)
Extent of local anesthetic spread as visualized on MRI after PENG block administration — 10 minutes after injection MRI images will be used to assess the diffusion pattern of local anesthetic following PENG (Pericapsular Nerve Group) block. The assessment will focus on whether the anesthetic reaches a specific fascial plane between the femoral vessels and nerves. A radiologist will evaluate the extent and location of the anesthetic spread in relation to key anatomical landmarks (according to centimeter-based measurements as per MRI protocols).
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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