RecruitingNCT07360093

PENG Block & PENG PRF

Evaluation of the Clinical Effectiveness of Pericapsular Nerve Group (PENG) Block and Pulsed Radiofrequency Applications in Chronic Hip Pain

Sponsor

Ankara City Hospital Bilkent

Enrollment

84 participants

Start Date

Feb 1, 2026

Study Type

OBSERVATIONAL

Conditions

Osteoarthritis (OA) of the hip

Summary

The primary aim of this study is to prospectively compare the effects of the pericapsular nerve group (PENG) block alone and the combination of PENG block with pulsed radiofrequency (PRF) on pain intensity in patients with chronic hip pain. As a secondary aim, the effects of both treatment modalities on hip function are intended to be evaluated using valid and reliable functional assessment scales. Through this study, it is aimed to demonstrate the clinical contribution of adding PRF to the PENG block and to identify a more effective and longer-lasting approach for the interventional treatment of chronic hip pain.

Eligibility

Min Age: 18 YearsMax Age: 80 Years

Inclusion Criteria4

Presence of chronic hip pain lasting at least 3 months
Baseline Visual Analog Scale (VAS) score ≥ 4
Clinical and/or radiological diagnosis of hip osteoarthritis
Inadequate response to conservative treatments

Exclusion Criteria6

Local or systemic infection at the intervention site
Coagulopathy or inability to discontinue anticoagulant therapy
Hip pain related to malignancy
History of previous hip arthroplasty
Severe neurological deficit
Pregnancy or breastfeeding

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Interventions

PROCEDUREPENG Block Pulsed radiofrequency

This intervention consists of a stepwise, two-stage treatment protocol routinely applied in our clinical practice for the management of chronic hip pain. In the first stage, all patients undergo an ultrasound-guided pericapsular nerve group (PENG) block as a diagnostic and therapeutic procedure. Pain intensity is assessed using the Visual Analog Scale (VAS) following the diagnostic block. Only patients who demonstrate a clinically meaningful response, defined as a reduction of 50% or greater in VAS scores, proceed to the second stage of the intervention. In the second stage, pulsed radiofrequency (PRF) treatment is applied to the same target region in addition to the PENG block, aiming to achieve longer-lasting analgesia through neuromodulation without tissue destruction.