Fig. 1The Genant semiquantitative scale, one of the vertebral fracture assessment tools, is classified into 4 grades according to the degree of collapse.
Fig. 2The mean of the preop. VAS was 8.07, and that was improved to a VAS of 2.43 after vertebroplasty. VAS: Visual analogue scale, Preop.: Pre-operative, Postop.: Post-operative, F/U: Follow-up.
Fig. 3This patient was proven by magnetic resonance imaging, to have a T12 occult fracture, and this occult fracture developed into delayed body collapse during conservative treatment.
Fig. 4This patient had a T9 occult fracture adjacent to an old fracture with severe body collapse. Delayed collapse was found even after successful conservative therapy. VAS: Visual analogue scale.
Fig. 5This patient had L1 occult fracture and underwent vertebroplasty. A radiograph 1 year after the operation shows no further collapse. The visual analogue scale score was improved from 8 to 1 after vertebroplasty. Note that the occult fracture was just adjacent to the old one with severe body collapse.
Fig. 6This patient with T12 occult fracture showed good clinical and radiological results after early surgical intervention. This fracture was also just adjacent to an old collapsed one. Preop.: Preoperative, VAS: Visual analogue scale, ext: Extension.