Spinal metastases can cause significant pain and, in some cases, threaten the structural stability of the vertebra where they occur. Vertebral tumor ablation using radiofrequency energy has become one option for treating tumor tissue within the bone itself, often performed alongside a cement-based stabilization procedure. This article explains what intraosseous ablation means in the spinal context, how it is generally performed, and how it relates to vertebral augmentation.
What Does Intraosseous Ablation Mean for Spinal Tumors?
Intraosseous ablation refers to delivering ablative energy directly inside bone tissue, as opposed to soft-tissue organs such as the liver or lung. In the spine, this typically involves advancing a specialized RF probe through a needle or cannula placed into the vertebral body under image guidance, most often CT or fluoroscopy. Once positioned within the tumor-involved portion of the bone, radiofrequency energy is delivered to generate heat and cause coagulative necrosis of the tumor tissue confined within that vertebral segment. Because bone has different thermal and structural properties compared with soft tissue, intraosseous RF systems are generally designed with this environment in mind, including considerations for controlled energy delivery within a confined bony space.
Why Are Spinal Metastases Treated With Ablation?
Spinal metastases occur when cancer originating elsewhere in the body spreads to a vertebra, which can happen with several cancer types, including breast, lung, and prostate cancer, among others. These metastatic lesions can cause localized pain, and in some cases they weaken the vertebral body enough to raise concern about a compression fracture. Bone tumor ablation is generally discussed in the literature as a option for reducing tumor burden within the affected vertebra and is often used with a goal of providing pain relief, though individual response varies and outcomes cannot be guaranteed for any specific patient. Ablation for spinal metastases is typically considered within a broader treatment plan that may also include radiation therapy, systemic cancer treatment, or surgery, depending on the extent of disease and the patient's overall condition.
How Does Vertebral Augmentation Relate to Ablation?
Vertebral augmentation refers to procedures such as vertebroplasty or kyphoplasty, in which bone cement is injected into the vertebral body to help stabilize it mechanically. Ablation and augmentation are commonly performed together in a single session for many patients with painful spinal metastases: the ablation step addresses the tumor tissue within the bone, while the augmentation step addresses the structural weakening that the tumor may have caused. This combined approach is discussed in clinical literature as a way to address both the tumor and the mechanical stability of the vertebra in one procedure, though the decision to combine these steps, or to use either one alone, depends on the individual patient's imaging findings and clinical presentation as assessed by the treating physician.
What Does the Procedure Generally Involve?
A typical intraosseous ablation and augmentation session is performed under image guidance with the patient positioned prone. After the RF probe is placed within the tumor-involved bone and ablation is completed, the same access point, or a closely related one, is often used to inject cement for augmentation if that step is planned. The entire procedure is generally performed on an outpatient or short-stay basis, though this varies by institution and patient condition. As with any spinal procedure, a qualified physician evaluates imaging, the extent of vertebral involvement, and the patient's overall condition before determining whether ablation, augmentation, both, or an alternative approach is appropriate.
An Intraosseous RF System for Vertebral Tumors
The Fusion Radiofrequency Ablation System for Spinal Tumors is described by the manufacturer as a minimally invasive intraosseous RF ablation system designed for treating vertebral tumor tissue. As with other RFA technology, this system delivers radiofrequency energy through a probe positioned within the target bone, with the specific technique and any accompanying augmentation determined by the treating physician. More information is available on the Fusion RFA System for Spinal Tumors product page, and the broader category of ablation devices can be found on the INVAMED oncology ablation products page.
Does vertebral tumor ablation always include cement augmentation?
Not always. Ablation and vertebral augmentation are frequently performed together, but each can also be performed independently depending on whether the vertebra shows signs of structural weakening or whether pain relief from tumor reduction alone is the primary goal. The treating physician determines the appropriate combination based on imaging and clinical findings.
Is intraosseous ablation used only for spinal metastases?
While this article focuses on spinal metastases, intraosseous RF techniques are also discussed in the literature for certain other bone tumors, including some benign bone lesions. Suitability for any specific bone tumor is determined by a qualified physician based on the tumor type and location.
What symptoms after a vertebral procedure need prompt attention?
New or worsening neurological symptoms, such as numbness, weakness, or loss of bladder or bowel control, following any spinal procedure should prompt patients to seek immediate medical care. The care team typically provides specific guidance on what to watch for during the recovery period.
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.