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Example 2
Lumbar Vertebroplasty : "stay in the ring" principle, needle course correction
Fig. 1 Right: Needle too close to the external limit of the ring on AP-view while the posterior wall is not reached on lateral projection. The hub notch in medial position, (bevel face in lateral position) leading the needle to the side.
Fig. 2 Left: Changing the bevel face orientation by turning the connector 180°. The hub notch is in side position (bevel face in medial position) leading the course of the needle medially.
Fig. 2 Right: Hammering, course of needle corrected. The needle has reached the posterior wall of the vertebra body (lateral projection). Needle still inside the ring on AP projection the procedure can be continued under strict lateral fluoroscopy.
