Fig 2.

Axial CT images from biopsy of a L3 collapse deformity revealing metastatic non–small cell lung carcinoma. Left, Image through the 25-gauge anesthetic needle used to anesthetize the skin and subcutaneous soft tissues. Middle, Image shows the 21-gauge vanSonneberg one-step access needle (Cook) allowing anesthetization of the deep paraspinal soft tissues and adjacent periosteum. Right, Image shows a 15-gauge Ostycut needle (C. R. Bard, Covington, GA) in good position and ready to be advanced through the adjacent cortex.