What is the purpose of the inflatable bone tamp (IBT) in kyphoplasty?

In kyphoplasty, the inflatable bone tamp (IBT) serves a critical function in the treatment of vertebral compression fractures. When the IBT is inserted into the fractured vertebra, it is inflated to create a void or space within the bone. This inflation helps to physically restore the height of the vertebra, effectively reducing the fracture. By creating this space, the IBT allows for the realignment of the fracture fragments, which is essential for alleviating pain and stabilizing the vertebra.

After the IBT achieves the desired height and the fracture is reduced, polymethylmethacrylate (PMMA) or bone cement is then injected into the space created by the tamp. This sequence underlines the importance of the IBT in facilitating the reduction before cement is introduced, which subsequently supports the vertebra and prevents future collapse.

Understanding this mechanism sheds light on the purpose and utility of the inflatable bone tamp within the kyphoplasty procedure, emphasizing its role in fracture reduction as a foundational step prior to stabilization with cement.