• Screw fixation (osteosynthesis) can be performed percutaneously by interventional radiologists. • CT- or CBCT-guidance results in high technical success rates for screw placement. • This minimally invasive technique avoids extensive surgical exposure in bone cancer patients. • Osteosynthesis provides pain relief for bone-insufficiency fractures and for pathologic fractures. • Osteosynthesis plus cementoplasty provide prophylactic consolidation of impending pathological fractures.
• Thermal ablation techniques are currently performed to palliate pain caused by bone metastases. • In selected patients, thermal ablation can also be indicated with a curative intent. • Oligometastatic and/or metachronous diseases are good prognostic factors for local success. • Small-size (<2 cm) bone metastases and no cortical erosion are good prognostic factors.
POPC for impending pathological fracture of the proximal femur seems to be a promising alternative for cancer patients who are not candidates for surgical stabilization. Further studies are required to confirm this preliminary experience.
A single microwave antenna can create ablation zones large enough to cover lung tumor mimic models of ≤4 cm with no heat sink effect from vessels of ≤6 mm. Synergic use of 3 antennas allows ablation of larger volumes than single-antenna or radiofrequency ablation, but great caution must be taken when 3 antennas are used simultaneously in the lung in clinical practice.
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