Cement filling control and bone marrow removal in vertebral body augmentation by unipedicular aspiration technique: an experimental study using leakage model.

Study Design: Experimental design using a laboratory leakage model.

Objective: To examine that a new aspiration technique, with a double conduit cannula design, improves the uniformity of cement filling, thus significantly reducing the risk of extraosseous leakage.

Summary Of Background Data: In vertebral augmentation, understanding the forces governing the intravertebral cement flow is essential for controlling the cement formation.