![]() Kümmell's disease (KD), or avascular necrosis of a vertebral body, presents as vertebral osteonecrosis with compression deformity, IVC, exaggerated kyphosis and intravertebral instability weeks to months after a minor trauma 2. Among which the incidence of nonunion is approximately 13.5% and the incidence of intravertebral vacuum cleft (IVC) sign is about 7%–13% 1. Cement leakage into intervertebral space occurred in four (44.45%) patients of PKP group.įollowing the accelerated speed of population aging, osteoporotic vertebral compression fracture (OVCF) has become increasingly common. In PKP group, although the VSA and ODI showed statistically significant differences between pre‐ and post‐operation and between pre‐ and final follow‐up ( P < 0.05), we could observe that the VSA and ODI rebounded a little at the final follow‐up. Good results have been achieved in LSF and SSF groups, the VAS, ODI, anterior height of affected vertebrae and kyphotic Cobb angle showed statistically significant differences between pre‐ and post‐operation and between pre‐ and final follow‐up ( P < 0.05). Both were related to high risk of cement complications in minimal invasive treatments for KD. Pattern II, IVC traversed to anterior edge of the vertebral body affected. Pattern I, clefts that were found to be near to the endplate and connected with intervertebral space, the endplate was incomplete. According to their radiographic appearance we could observe two main patterns of clefts. All patients were followed up for 12–38 months. ![]()
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