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Cryoablation of bone metastasis (the solitary metastasis in the distal femur of the previous patient). a, b First, under local anaesthesia and US guidance, three bone biopsy needles are inserted into the lesion under cone-beam CT guidance, and cryoablation is then performed with needles (arrows) inserted coaxially. c After the ablation, the cryoneedles are removed, and cement (arrowheads) injection is performed through the outer needles to support the bone
