This article explains, in educational terms, pulsed rf vs thermal rf — how the technology works and where it fits. Common targets include the medial branch nerves supplying the facet joints of the spine, the sacroiliac region, and peripheral nerve branches such as the genicular nerves around the knee. As a medical device manufacturer, INVAMED develops technologies in this area; the information here is educational and not medical advice.
Background: Chronic Pain Managed with Interventional Radiofrequency Techniques
Interventional pain management, sometimes called algology, addresses chronic back, neck, joint, and tumor-related pain that has not responded adequately to conservative measures. Common targets include the medial branch nerves supplying the facet joints of the spine, the sacroiliac region, and peripheral nerve branches such as the genicular nerves around the knee. A central technique is radiofrequency (RF) treatment, in which controlled energy is delivered through an electrode to thermally ablate or modulate nerves that transmit pain signals.
Pulsed and Thermal RF Modes
Thermal RF applies continuous energy to raise nerve tissue temperature and create a heat lesion, while pulsed RF delivers energy in bursts. Pulsed RF is intended to modulate the nerve with less thermal lesioning and is used in situations where a clinician judges it appropriate. Generators such as the INVAMED Peta platform provide real-time feedback on temperature and impedance to support controlled energy delivery. The choice between pulsed and thermal modes is made by the pain specialist for the specific target.
Design and Technical Notes
INVAMED's pain management portfolio centres on radiofrequency lesion generators and electrode systems, organized by the anatomical target and the type of RF energy delivered. Real-time feedback on temperature, impedance, and lesion size is intended to support safe energy titration during RF procedures. The literature commonly cites facet RF relief in the range of about 6 to 12 months, but individual duration varies and is not guaranteed.
Key Considerations
- Manufacturer descriptions reflect device design intent rather than a guaranteed outcome for any individual.
- Real-time feedback on temperature, impedance, and lesion size is intended to support safe energy titration during RF procedures.
- Because sensory nerves can regenerate, repeat treatment may be considered over time, based on the return of symptoms.
Frequently Asked Questions
How long does RF ablation relief last?
The literature commonly cites facet-related relief of about 6 to 12 months, but duration varies by patient and target and is discussed with the treating specialist.
Who decides if radiofrequency ablation is appropriate?
A qualified pain specialist decides based on individual assessment and diagnostic blocks; this article is educational and not a treatment recommendation.
Does INVAMED make a system for knee nerve ablation?
Yes. The Peta Radiofrequency Ablation (RFA) for Knee Pain is positioned specifically for genicular (knee) nerve applications.
About INVAMED
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.
Clinical and Technical Context
The INVAMED Peta Radiofrequency Ablation (RFA) for Knee Pain is positioned specifically for this knee application. The INVAMED Fusion Intraosseous Radiofrequency Ablation System for Spinal Tumors is positioned for this within-bone application. Its use is planned individually as part of a broader oncological and pain management strategy. Thermal RF creates a heat lesion to interrupt pain transmission, while pulsed RF applies energy in bursts intended to modulate the nerve without the same degree of thermal lesioning. The decision to treat and the specific level targeted are determined by the pain specialist. The literature commonly cites facet RF relief in the range of about 6 to 12 months, but individual duration varies and is not guaranteed. A central technique is radiofrequency (RF) treatment, in which controlled energy is delivered through an electrode to thermally ablate or modulate nerves that transmit pain signals. Interventional pain management, sometimes called algology, addresses chronic back, neck, joint, and tumor-related pain that has not responded adequately to conservative measures.
Related on INVAMED
- Pain Management, Spine & Algology — product category
- Can radiofrequency ablation be repeated?
- Inside the Peta Radiofrequency Ablation (RFA) System, Nerve: Design and Applications
- Choosing a Pain Management, Spine & Algology Supplier: What Buyers Should Know
Important Disclaimer
The information here is provided for educational purposes and to describe device technology; it is not a substitute for professional medical advice, diagnosis, or treatment. Only a licensed healthcare provider can determine whether a given procedure or device is appropriate for a specific patient. INVAMED products are restricted to use by qualified professionals following the official IFU. Regulatory clearance and labeling differ between regions, and not all products or indications are available in every market.
Reviewed by the INVAMED Medical Affairs team. Content is educational and technical in nature.