Vertebral augmentation is a minimally invasive treatment for osteoporotic vertebral compression fractures.
For thoracolumbar fractures, percutaneous vertebroplasty (PVP) is commonly used. During the procedure, bone cement is delivered into the affected vertebra to stabilize the fracture and relieve pain, while helping restore vertebral height.
Percutaneous kyphoplasty (PKP) involves balloon expansion within the vertebral body before cement injection. This technique stabilizes the fractured vertebra, alleviates pain, and provides greater potential for vertebral height restoration.
-Classification and Techniques of Vertebral Augmentation
Vertebral augmentation mainly includes:
• Percutaneous Vertebroplasty (PVP)
• Balloon Kyphoplasty (PKP)
1. PVP
A small posterior incision of approximately 2 mm is made, followed by percutaneous insertion of a specialized trocar into the vertebral body under fluoroscopic guidance. After establishing a working channel, bone cement is injected to stabilize the fractured vertebra, limit further collapse, and relieve pain.
2. PKP
After balloon expansion, the surrounding cancellous bone is compacted to create a cavity within the vertebral body. Bone cement is then injected in stages. This approach helps control injection pressure and reduce the risk of cement leakage.
Comparison: PKP vs. PVP
PKP uses a balloon and specialized instruments to expand the compressed vertebral body before cement injection. Compared with PVP, PKP provides better vertebral height restoration.