Figure 4 | Scientific Reports

Figure 4

From: A novel puncture approach via point “O” for percutaneous kyphoplasty in patients with L4 or L5 osteoporotic vertebral compression fracture

Figure 4

The local Cobb angle was measured to determine the kyphotic deformity on lateral radiographs. A, M and P represented anterior, middle and posterior height of vertebral body, respectively. The height of the fractured vertebral body was assessed via the compression ratio before and after operation, the compression ratio was computed by A/P \(\times\) 100% and M/P \(\times\) 100%.

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