Fig. 2From: Comparison of a directional cement delivery device versus conventional device in unilateral percutaneous kyphoplasty for the therapy of osteoporotic thoracolumbar fracture in the elderlyA Unilateral PKP skin incision design (white arrow represents the puncture point). B Puncture Angle range is 10°-15° (conventional group is 15°–20°). C, D, E, Puncture to establish a working channel, balloon expansionBack to article page