Fig. 1From: Comparison of a directional cement delivery device versus conventional device in unilateral percutaneous kyphoplasty for the therapy of osteoporotic thoracolumbar fracture in the elderlySchematic diagram of directional bone cement delivery device used in unilateral PKP. A, B The schematic diagram of directional bone cement delivery device and bone cement injected through the side opening. Cement filling direction can be controlled by rotating the device. The different rotating angles and injecting position of bone cement, for instance down (C), up (D), inward (E) and outward (F)Back to article page