Fig. 2From: Evaluation of surgical outcome of Jack vertebral dilator kyphoplasty for osteoporotic vertebral compression fracture—clinical experience of 218 casesFluoroscopic graphs taken during Jack vertebral dilator kyphoplasty. a Acquisition of tissue specimens for pathological examination during the kyphoplasty; b presetting the surgical path inferiorly within the vertebral body; c presetting the surgical path superiorly within the vertebral body; d the Jack vertebral dilator is fully expanded in the vertebral bodyBack to article page